All Entries of showcaves.com

3906 entries are listed on showcaves.com on 12-Feb-2012 23:27:10
10,000 Year Clock, us	Underground Project 131, cn	19-Lachter-Stollen, de
816 Military Nuclear Plant, cn	Aachquelle, de	Aareschlucht, ch
Abaligeti-barlang, hu	Museo Minerario di Abbadia San Salvatore, it	Furna do Abel, pt
Abercrombie Caves, au	Abime, be	Cueva del Abra, mx
Abraham's Cave, tr	Abrakurrie Cave, au	Abukuma-do, jp
Abu Simbel, eg	Caves Ackerman, fr	Grotta di Acquasanta, it
Actun Kan Cave, gt	Admiral's Cave, bm	Cueva de Adsubia, es
Adventure Copper Mine, us	Afawa Cave, pg	Magharet Afqua, lb
Aggertalhöhle, de	Spilia Agia Paraskevi - Aghia Paraskevi Cave, gr	Agia Paraskevi, gr
Spilea Agia Sophia - St Sophia's Cave (Kythira), gr	Spilea Agia Sophia - St Sophia's Cave (Crete), gr	Spilia Agio Gala, gr
Spilaio to Agiou Antoniou, gr	Spilaio Agios Georgios, gr	Agios Georgios Mandelas's Cave, gr
Iepa Moni Agios Gerasimos, gr	Spilia Ag Ioánnis Erimitis - Hermits' Cave of Saint John, gr	Spilia Áyios Ioánnis Iráklia, gr
Spilia O'Ag Ioannis Kastro - St John's Hermit Cave, gr	Spilaio Agios Mamas - Agios Mamas Cave, gr	The Glittering Caves of Aglarond, XX
A GoGo Valkenburg, nl	Cueva del Agua, es	Agua Azul, mx
Caverna Água Suja, br	Grutas del Águila, es	Geode at the Mine of Sierra del Aguilón, es
Gruta das Agulhas, pt	Les grottes de l'Aguzou, fr	Aillwee Cave, ie
Aitiks Koppargruva, se	Aitzulo, es	Ajanta Caves, in
Ajkai Bányászati Múzeum, hu	Akarsu Köyü Mağarası, tr	Akasaki shonyudo, jp
Akiyoshi-do, jp	Akka-do, jp	Akköy Evleri, tr
Aktun Chen, mx	Cenote Aktun Ha, mx	Alabama Mining Museum, us
Alabaster Caverns State Park, us	Cuevas Pedro Antonio de Alarcón, es	Alayan-Lion Cave System, ph
Pestera Albastra, ro	Gruta das Alcobertas, pt	Al-Daher Cave, jo
Magharet Al Dawwayat, sy	Aldrich Coal Mine Museum, us	Aleksandrovo Thracian Tomb, bg
Alepotrypa, gr	Mine Témoin d'Alès, fr	Alexander's Cave Houses, gr
Alexandra Cave, au	Alfina Hotel, tr	Al Hotta Cave, om
Ali Barbour's Cave, ke	Ghar-e-Ali Sadr, ir	Spilaio Alistratis - Alistrati Cave, gr
Allander Tropfsteinhöhle, at	Allikukivi Caves, ee	Sinkgruvene i Allmannajuvet, no
Almond Valley Heritage Centre, gb	Jebal Al Qarah, sa	Altamira, es
Piatra Altarului, ro	Salzbergwerk Altaussee, at	Besucherbergwerk Alte Hoffnung Erbstolln, de
Altensteiner Höhle, de	Alter Elbtunnel, de	Altinbesik Mağarası, tr
Altinocak Restaurant, tr	Cueva de Altxerri, es	Alufu Dong, cn
Alux Restaurant & Lounge, mx	Grutas de Alvados, pt	Alvensleben-Stollen, de
Amarnath Cave, in	Schaubergwerk Am Aschenberg, de	Mapango ya Amboni - Amboni Caves, tz
Åmdals Verk Gruver, no	American Cave Museum, us	Velká Amerika, cz
Ami Chenin, fr	Amlwch Copper Kingdom, gb	Ampanito Valakely, mg
Anakami shonyudo, jp	Ananui Cave, nz	Anapala Chasm, nu
Anatola Cave, nu	Anatolian Houses, tr	Anchor Church Cave, gb
Andersgrotta, no	Andreas-Gegentrum-Stolln, de	Anemone Cave, us
Spilaio Anemotrypa, gr	Cenote Angelita, mx	Grotta dell'Angelo, it
Animal Flower Cave, bb	Grotte d'Anjohibe, mg	Anlage Mitte, pl
Anna Barlang, hu	Grube Anna-Elisabeth, de	Ansite, es
Antelope Canyon, us	Pavilon Anthropos, cz	Cuevas de la Antigua Fragua, es
Antiparos, gr	Antonijev Rov, si	Antonio Pereira Imperial Topaz Mine, br
Cueva de Anzo, es	Aoiwa shonyudo, jp	Ape Cave, us
Apedale Mine, gb	Appalachian Caverns, us	Aquinaldo Cave, ph
La Caune de l'Arago, fr	Aranui Cave, nz	Saline Royale d'Arc-et-Senans, fr
Arch Cave, ca	Kaivosyhtiö Arctic Ametisti Oy, fi	Grotte D'Arcy, fr
La Cuevona de Ardines, es	Minas de Arditurri, es	Ardlair Cave, gb
Ardoisalle 1947, be	La grotta delle Arene Candide, it	Gorges de l'Areuse, ch
Argo Gold Mill and Museum, us	Argyle Diamond Mine, au	Arigna Mining Experience, ie
Arizona Mining and Mineral Museum, us	Arjeri, am	Arjun Gufa, in
Arkasu Mağarası, tr	Aven Armand, fr	Arnhem Cave, na
Historische Kelders Arnhem, nl	Arnold Ice Cave, us	Arnthöhle, de
Arochukwu Cave, ng	La Grotta dell' Arsenale, it	Coves de Artá, es
Cave Village Artenara, es	Schaubergwerk Arthurstollen, at	Artlish River Cave, ca
Aruküla Caves, ee	Schau- und Lehrstollen Arzberg, at	Asbestos Mineral Museum, ca
Brachoskepi Asprochaliko, gr	Historisches Dachschieferbergwerk Assberg, de	Forschungsbergwerk Asse, de
Astana Underground Museum, cn	Astley Green Colliery Museum, gb	Ataman Hotel, tr
Atapuerca, es	Atea Kananda, pg	Grutas de Atepolihui, mx
Atlantikwall, fr	Atlas Coal Mine National Historic Site, ca	Atomkeller, de
The Treasury of Atreus, gr	Attahöhle, de	La Carrière d'Aubigny, fr
Grotte des Audides, fr	Auerbachs Keller, de	Musée des Mines de Fer d'Aumetz, fr
Aurangabad Caves, in	Aurora Erbstolln, de	Cueva del Cerro Autana, ve
Aux Vieux Logis, fr	Avaiki, nu	Avan Mine, am
Ayala Disco, cu	Ayo Rocks, aw	Ayvaini Mağarası, tr
Grotte d'Azé, fr	Grotte du Mas-d'Azil, fr	Pozo Azul, es
Cenote Azul, mx	Grotta Azzurra, it	Höllgrotten Baar, ch
Jama pod Babjim zobom, si	Bachelor-Syracuse Mine Tour, us	Bacho Kiro, bg
Badami Cave Temple, in	Kurzentrum Bad Bleiberg, at	Badger Mine and Museum, us
Baekryong Donggul, kr	Bärenhöhle, de	Bärenhöhle, de
Bärenschützklamm, at	Bagdad Mine, us	Bag End, XX
Baggehola, no	Bagh Caves, in	Bagshawe Cavern, gb
Bahay Paniki Cave, ph	Bailong Dong, cn	Baima Dong, cn
Bái Ma Jiàng Jun Dòng, cn	Baixiangdong, cn	Naval Museum Complex Balaklava, ua
Gruta de Balankanché, mx	Balatoc Mines Tour, ph	Jeskyne Balcarka, cz
Bald Hill Mine, au	Balek Sulfur Caves, pg	Ballica Magarasi, tr
The Ballroom, nz	Grottenburg Balm, ch	Grottes de la Balme, fr
Baloc-Baloc Cave, ph	Balsbergsgrottan, se	Balver Höhle, de
Grotte di Balzi Rossi, it	Bamei Polje, cn	Baňa Cígeľ, sk
Banbury Tourist Mine, nz	Banjaran Hotsprings Retreat, my	Banské Muzeum v Prirode, sk
Banské Muzeum, sk	Banská Štiavnica, sk	Banwell Bone Caves, gb
Grotte de Bara-Bahau, fr	Barabar Caves, in	Baračeve špilje, hr
Baradla Barlang, hu	Baranca Sunu Grot, aw	Barbarastollen, de
Barbarossahöhle, de	Jama Baredine, hr	Bari Imam Cave, pk
Barons' Cave, gb	Barry troglodyte village, fr	Bartholomäberg, at
Barton Creek Cave, bz	Basaltkeller, de	Bastnäsfältet, se
Bat Cave, us	Bat Cave, ky	Bat Cave, ca
Bat Cave Mine, us	Bates Cave, au	Bathala Caves, ph
Bat Cave, kn	Battery Hill, au	Battle of Britain Control Room, gb
Batu Caves, my	Baumannshöhle, de	BC Museum of Mining, ca
Beaconsfield Mine and Heritage Centre, au	Beamish, gb	Bear Cave, us
Grotte di Beatrice Cenci, it	St. Beatushöhlen, ch	Grotte de Beaume Obscure, fr
Beckham Creek Cave Haven, us	Beckley Exhibition Coal Mine, us	Grotte du Bédat, fr
Grotte de Bédeilhac, fr	Bedsa Caves, in	Beer Quarry Caves, gb
Grottene i Beiarn, no	Beit She'arim National Park, il	Béke-barlang, hu
Bekiris Cave, gr	Cueva de Belda, es	Beldibi Magarasi, tr
Belianska Jaskyna, sk	Bell Caves, il	Cuevas de Bellamar, cu
Les grottes de Bellevue, fr	Bellevue Underground Mine Tour, ca	Bellingham Heritage Centre, gb
Bell Island's Mine Museum and Underground Tour, ca	Bell Witch Cave, us	Cueva de Belmaco, es
Belum Caves, in	Grotte di Belverde, it	Grotte des ain Beni Add, dz
Cuevas de Benifallet, es	La Cueva de Ben Loman, bz	Benshan Fifth Tunnel, cn
Benxi Water Cave, cn	Erlebnisbergwerk Berchtesgaden, de	Heilstollen Berchtesgaden, de
Südtiroler Bergbaumuseum, it	Le vieux Berger, fr	Berkeley Pit, us
Berliner Unterwelten, de	Caves Bernard-Massard, lu	Grottes de Bernifal, fr
Bernsteiner Felsenmuseum, at	Berry Springs, au	Bersham Colliery, gb
Bertrix Slate Mine, be	Besucherbergwerk Bertsch, de	Grottes de Betharam, fr
Bethlehem Cave, us	Beulah Mine, us	Gua Bewah, my
Saarländisches Bergbaumuseum Bexbach, de	Parc archéologique de Beynac, fr	Les Grottes de Bèze, fr
Bezeklik Thousand Buddha Caves, cn	Bhaja Caves, in	Bhalil Cave Dwellings, ma
Bhartrihari Caves, in	Bhimbetka, in	Patal Bhuvaneshvar, in
Bicchu-Kanachi ana, jp	Big Basin, us	Big Bone Cave, us
Big Brutus, Inc., us	Big Four Ice Caves, us	Big Ice Cave, us
Big Nugget Mine, us	Big Opal Mine, au	Big Pit, gb
Big Spring, us	Pecina Bijambare - Bijambare Cave, ba	Bilsteinhöhlen, de
Bilzingsleben, de	Besucherbergwerk Grube Bindweide, de	Binghöhle, de
Bingag Cave, ph	Bingham Canyon Mine, us	Bird's Botanicals, us
Birkhill Caverns Clay Mine, gb	Birresborner Eishöhlen, de	Špilja Biserujka, hr
Citadelle de Bitche, fr	Biyundong, cn	Gruvmuseet Bjuv, se
Blaafarveværket, no	Blaauwbank Historic Gold Mine, za	Black Buddha Cave, cn
Black Chasm, us	Black Country Living Museum, gb	Black Hills Caverns, us
Black Hills Mining Museum, us	Blair Athol Coal Mine, au	Blanchard Springs Caverns, us
Blanche Cave, au	Grotte de Blanot, fr	Blaue Quelle, at
Blauer See, de	Blautopf, de	Cova Blava, es
Błędne Skały, pl	Blegny, be	Grube Neue Hoffnung Bleialf, de
Bletterbachschlucht, it	Source Bleue, fr	La Mine Bleue, fr
Bloomington Cave, us	Il-Hnejja, mt	Blue Hole, eg
Blue Creek Cave, bz	Blue Hills Tin Streamers, gb	Blue Hole, bz
Blue Hole Spring, us	Blue Hole, jm	Blue Hole Mineral Spring, jm
Blue John Cavern, gb	Blue Lake Rhino Cave, us	Bluespring Caverns, us
Bluff Dweller's Cave and Browning Museum, us	Blyde River Canyon, za	Bnei Hezir, il
Toca da Boa Vista, br	Bobby Dazzler Walk-in Mine, au	Boca Tabla Cave, an
Uzdrowisko Kopalnia Soli, pl	Les casemates du Bock, lu	Bocksteinschmiede, de
Bodagrottorna, se	Bodås gruva, se	Bodenloses Loch, de
Silberberg Bodenmais, de	Pesterna Crkva Sveta Bogorodica, mk	Ecomusée du Bois-du-Luc, be
Bojnická Jeskyne, sk	Boka, si	Bergrum Boliden, se
Bollinger, fr	Bom Jesus da Lapa, br	Bon Accord Mine Complex, au
Bo Nau Cave, vn	Bondstollen Kopparberg, se	Bone Cave, gb
Bong Mieu Gold Mine, vn	Cueva Bonita, es	Bonnechere Caves, ca
Bonne Terre Mine, us	Boone's Cave State Park, us	Cavernas El Boquerón, hn
Border Cave, za	Borenore Caves, au	Grotte Di Borgio Verezzi, it
Il Borgo Ritrovato, it	Tham Borichinda, th	Hessisches Braunkohle Bergbaumuseum Borken, de
Borra Caves, in	Pętla Boryszyńska, pl	Grotte du Bosc, fr
Bosc de Fades Bar, es	Grotta di Bossea, it	Bottini, it
Gruta de Botuverá, br	Boulder Caves, us	Boulder Cave, us
Grotte de Bournillon, fr	Les Caves Bouvet-Ladubay, fr	Les Boves, fr
Tham Bo Ya, th	Boyd Cave, us	Boyden Cavern, us
Bozkovske Dolomitove jeskyne, cz	Bracken Bat Cave, us	Abime de Bramabiau, fr
Musée de la Mine Brassac les Mines, fr	Breitachklamm, de	Brenztopf, de
Dalen-Kjørholt Gruve, no	Château de Brézé, fr	Hornické Muzeum, cz
Bridal Cave and Thunder Mountain Park, us	Brighton's Victorian Sewer, gb	Brillenhöhle, de
Brimble Pit and Cross Swallet Basins, gb	Bristol Caverns, us	Muzeum brněnského podzemí, cz
Brněnská kostnice, cz	Broken Boot Gold Mine, us	Schaustollen Silberbergwerk Bromriesen, at
Bronson Caverns, us	Bruce's Cave, ie	Bruce's Cave, gb
Bruce's Caves, ca	Wiarton's Hermit, ca	Brünig Indoor Schiess-Sport-Zentrum, ch
Caverna de las Brujas, ar	Las Cuevas de las Brujas, es	Bruneckerhöhle, at
Campement préhistorique de Bruniquel, fr	Brunner Mine, nz	Brunnsteinhöhle, de
Brunson Instrument Company, us	Buchenlochhöhle, de	Höhlenburg Buchfart, de
Quarzsandbergwerk im Krähstel, ch	Schaubergwerk Büchenberg, de	Grotta di Bue Marino, it
Buenavista Cave, ph	Buffalo National River, us	Bugasan Cave, ph
Kalimuseum Buggingen, de	Bukilat Cave, ph	Bulla Regia, tn
Bullock Creek Sinks, nz	Bull Shoals Caverns, us	Bultfontein Mine, za
Izvor Buna, ba	Atombunker der Bundesregierung, de	Bunkeri, hr
Bunkermuseum Emden, de	Bunkermuseum Hamburg, de	Bunkermuseum Rennsteig, de
Furna do Buraco do Padre, br	Besucherbergwerk Burgbergstollen, de	Travertine of Burgtonna, de
Burke's Luck Potholes, za	Burra Monster Mine, au	Burrows' Cave, us
Bushmans Kloof, za	The Caves of the Bussento River, it	Grutas de Bustamante, mx
Butterfly Cave, cn	Cueva del Buxu, es	Buynovsko Zhdrelo, bg
Buzluk Mağarası, tr	Byakuren-do, jp	Jeskyně Býčí skála, cz
Bystrianska Jaskyna, sk	Cuevas de Cabarete, do	Cuevas de Cabarete, do
Cabinet War Rooms, gb	Gouffre Géant de Cabrespine, fr	Grutas de Cacahuamilpa, mx
Cacupangan Cave, ph	Musée de la Mine Cagnac les Mines, fr	Manoir de la Caillère, fr
Cala Covas, es	Cenote Calavera, mx	Cueva de las Calaveras, es
Calbiga Caves, ph	Calcata Cave Houses, it	Calcehtok Cave, mx
Caldecotte Project, gb	Caledonia Copper Mine, us	Grottes de Calès, fr
Caleta Negra, es	Calgardup Cave, au	California Caverns, us
Çalköy Mağarası, tr	Callao Cave, ph	Għar Calypso, mt
Cameron Cave, us	Cammoo Cave, au	Camooweal Caves National Park, au
Cuevas de Campanet, es	Covolo di Camposilvano, it	Les Canalettes, fr
Cuevas del Canelobre, es	Canard Duchene, fr	Canashito Grot, aw
Candelaria Caves, gt	Grotta del Cane, it	Cango Caves, za
Cova de Can Marçà, es	Cantabon Cave, ph	Museo del Cantero, es
Capão Mine, br	Abri Préhistorique du Cap Blanc, fr	Cape Breton Miners' Museum, ca
Capelton Mines, ca	Musée de la Mine de Cap Garonne, fr	Capigtan Cave, ph
Cappadocia Cave Suites, tr	Cave Dwellings of Cappadocia, tr	Cappadocia Palace, tr
Cappadocia Cave Resort & Spa, tr	Catacombe dei Cappuccini, it	Capricorn Caves, au
Carbonate Mine, us	Grotta di Carburangeli, it	Carey's Cave, au
Gruta de Carlos Pacheco, mx	Carlsbad Caverns, us	Carmel National Nature Reserve, gb
Carnglaze Slate Caverns, gb	Carolinen Grube, de	Grottes de Carpe Diem, fr
Carran Turlough, ie	Musée du Carreau Wendel, fr	Carreg Cennen Castle Caves, gb
Algar do Carvão, pt	Gruta do Carvão, pt	Carver's Cave, us
La Casa di Lucio, it	Cascade Caverns, us	Cascade Cavern, us
Parque da Cascata, br	Casibari Rocks, aw	Cueva de Castañar, es
Grotta di Castelcivita, it	Grotta di Castellana, it	Grotta di Castello Tesino, it
Castle Cave, au	Catacombe Roma - The Catacombs of Rome, it	The Catacombs of Paris, fr
Cataviña, mx	Besucherbergwerk Grube Catharina Neufang, de	Cathedral Cave, us
Cathedral Caves, nz	Cathedral Cave, gb	Cathedral Cave, bm
Cathedral Cave, au	Cathedral Gorge, au	Cathedral Caverns, us
Cathedrale d'Images, fr	Les Cathédrales de la Saulaie, fr	Cat Hole Cave, gb
Grotta del Caudano, it	Giant's Causeway, ie	Cava 177, it
Grotta del Cavallone, it	Furnas do Cavalum, pt	Cave-in-Rock State Park, us
Cave and Basin, ca	Cave Creek, nz	Cave Garden, au
Cave Hill, ie	Caveman Bar-BQ & Steak House, us	Cave of the Winds, us
Caveoso Hotel, it	Cave des Producteurs de Montlouis, fr	Cave River Park, us
Cavern Club, gb	Cavern Lake Cave, us	Caves Branch Jungle Lodge, bz
Cave Spring, us	Cave Spring Historic Site & Nature Center, us	Cave Spring Caverns, us
Cave Spring, us	Cave Stream, nz	Cave Vineyard, us
Centro di Documentazione delle Miniere di Lignite, it	Roc de Cazelle, fr	Bois du Cazier, be
Cedar Creek Springs, us	Cefn Coed Colliery Museum, gb	Cehennemağzi Mağarası, tr
Cennet Adası Mağarası, tr	Cennet ve Cehennem, tr	Cenobio de Valerón, es
Cenotillo, mx	Centaur's Cave, ag	Gruta do Centenário, br
Center Mine, us	Cento Pozzi, it	Centralia Burning Coal Mine, us
Jenolan Caves - Cerberus Cave, au	Museu de les Mines de Cercs, es	Grotte du Cerdon, fr
Ceremosnja Pecina, rs	Gua Cerita, my	Cerknisko Jezero, si
Cerme Cave, id	Cerovačke špilje, hr	Grafitový důl Český Krumlov, cz
Pestera Cetatile Ponorului, ro	Cenote Chac Mool, mx	Chal-Nakhjir, ir
Chalukyan Caves, in	Chambers of the Black Hand, au	Chamera Guffa, np
Le Musée du Champignon, fr	Chañarcillo Mine, cl	Channel Tunnel, gb
Chaoyang Dong, cn	El Chapandáz, es	Gua Charah, my
Charlottenhöhle, de	Musée de l'Ours des Cavernes en Chartreuse, fr	The Chasm, nz
Chatterley Whitfield Mining Museum, gb	Grotte des Chauves-souris, tn	Exposition Grotte Chauvet, fr
Grotte Chauvet, fr	Che Chem Hah, bz	Cheddar Caves & Gorge, gb
Cheddar Gorge, gb	Chelmskie Podziemia Kredowe, pl	Cenote Chemuyil, mx
Cheongok-dong, kr	Museum of Speleology and Bulgarian Karst, bg	Historic Cherokee Caverns, us
Cherokee Cave, us	Chersonesos Cave Chruch, ua	Chessiloch, ch
Cheung Po Tsai Cave, cn	Tham Chiang Dao, th	Chicago Museum of Science and Industry, us
Minas Chico Rei, br	La Caverna de Chicoy, gt	Chi Day Caves, vn
Grotte du Chien, fr	Jenolan Caves - Chifley Cave, au	Chilibrillo Cave, pa
Chillagoe Caves, au	Chinhoyi Cave, zw	Chiquibul Cave System, bz
Chislehurst Caves, gb	Cholerenschlucht, ch	Cholerenschlucht, ch
Chollar Mine, us	Cholula - Quetzalcoatl Tunnels, mx	Tham Chom Ong, la
Ch'ondong Cave, kr	Grottes de Choranche, fr	Besucherbergwerk Grube Christiane, de
Schieferbergwerk Grube Christine, de	Chrustenická Šachta, cz	Chua Tien, vn
Chudnite Mostove, bg	Cueva de Chufín, es	ChufutKale, ua
Chuiyun Tongtian River, cn	Chuquicamata Copper Mine, cl	Church Cave, gb
Paddock - Churchill's Secret Bunker, gb	Chýnovská jeskyně, cz	Jaskinia Ciemna, pl
Cierny Vyvieracka, sk	Císařská jeskyně, cz	Cisterne Romane, it
Civil Defense Caves, us	Grotte de Clamouse, fr	Cueva Clara de Enpalme, pr
Grube Clara, de	Clarksville Cave, us	Clearwater Cave, my
Clearwell Caves, gb	St. Clements Caves, gb	Cliff Cave, us
Cliffs Shaft Mine Museum, us	Clifton Cliff Jail, us	Cloaca Maxima, it
Grotte du Clos del Pous, fr	Le Clos des Roches, fr	C.M.T. Underground Mine Tour, au
Jenolan Caves - Devil's Coach House, au	Coaltown Museum, nz	Grotte de la Cocalière, fr
Grutas de Cocona, mx	Cody Caves Provincial Park, ca	Schloß Colditz Escape Tunnels, de
Coles Cave, bb	Les Coves del Collbato, es	Grotta di Collepardo, it
Cova d'es Coloms, es	Colonial Adit Underground Mine Tour, ca	Colorado Bend State Park, us
Colossal Cave, us	Colossal Cave, us	Colosseum, it
Colowyo Mine, us	Peştera Comarnic, ro	Grotte des Combarelles, fr
Combe Grède, ch	Grotte et Abime de Comblain-au-pont, be	Comet Gold Mine, au
Compromise Mine, us	Las Conchas, gt	Conch Bar Caves, tc
Con Moong Cave, vn	Consolidated Gold Mines, us	Grotte Conturines, it
Cooper's Cave, us	Copán, hn	Coral Caverns, us
Antro del Corchia, it	Corfu Cave Tour, gr	Grottes du Cornadore, fr
Corner Brook Cave, ca	Coronado Cave, us	Grotte de la Glacière de Corrençon, fr
Cosmic Caverns, us	Grotte Cosquer, fr	Coteau Freedom Mine, us
Coudersport Ice Mine, us	Grottes de Cougnac, fr	Gabriel Coulet, fr
The Country Boy Mine, us	Dahlonega Courthouse Gold Museum State Historic Site, us	Cueva de Covalanas, es
Gorges de la Covatanne, ch	Cove Cave, gb	Coxcatlán Cave, mx
Grutas de Coyame, mx	Crag Cave, ie	Crater of Diamonds State Park, us
Craters of the Moon, us	Maison des Pierreux de Crazannes, fr	Creede Underground Mining Museum, us
Cresson Mine, us	Festungsmuseum Crestawald, ch	Creswell Crags Gallery, gb
Creswell Crags, gb	Grotte du Crête de Vaas, ch	Crisson Gold Mine, us
Grutas de Cristal, es	Mine Cristal, ca	Crocodile Harry, au
Abri de Cro-Magnon, fr	Crowborough Caves, gb	Crow Creek Mine, us
Crown Cave, cn	Cruachan Power Station, gb	Subterranean Crusader City, il
Crvena Stijena, me	Crveno Jezero, hr	Crystal Cave, us
Crystal Caves, bm	The Crystal Caves, au	Crystal Gold Mine, us
Crystal Grottoes Caverns, us	Crystal Lake Cave, us	Crystall Ball Cave, us
Crystal Cave, us	Crystal Onyx Cave, us	Crystal Cave Park, us
Crystal Shrine Grotto, us	Crystal Caverns at Hupp's Hill, us	Crystal Cave, us
Cserszegtomaj barlang, hu	Csodabogyós-barlang, hu	Cuarenta Casas, mx
Cuarto-Cuarto Cave, ph	Cuatro Puertas, es	Cub Run Cave, us
Củ Chi Tunnels, vn	Cuetzalan, mx	Cova es Cuilleram, es
Çukurören Underground City, tr	Cullinan Mine, za	Culver Hole, gb
Cuma - Antro della Sibilla, it	Cumberland Caverns, us	Curraghmore House, ie
Grotte Cussac, fr	St Cuthbert's Cave, gb	Cutta Cutta Caves, au
Cuzamá Cenotes, mx	Cave of Cyclops, gr	Sztolnia "Czarny Potok" w Tarnowskich Gorach, pl
Daciyan, cn	Da Dung Mountain Caves, vn	Daegeumgul, kr
Roung Dai Ho, kh	Les gorges du Daillet, ch	Daimasu shonyudo, jp
Għar Dalam, mt	Dalton Gang Museum and Escape Tunnel, us	Damanhur Temple, it
Cueva de Damas, cr	Damawewe, pg	Peştera Dambovicioara, ro
Dambulla, lk	Damlatas Magarasi, tr	Dan-yr-Ogof - National Showcaves Centre for Wales, gb
Dandak Gufa, in	Daneilshöhle, de	Danger Cave, us
Dannemora Gruvor, se	Darband Cave, ir	Darby's Cave, ag
Grotte de Dargilan, fr	Daugbjerg Kalkgruber, dk	Hang Dau Go, vn
Daveli's Cave, gr	David Gareja, ge	Historic Daydream Mine, au
Dazu Grottoes, cn	D Dupleks, lv	Central Deborah Gold Mine, au
De Castellane, fr	Dechenhöhle, de	Dedeli Konak, tr
Gua Payau, my	Deinhard Kellermuseum, de	Deir Muqallik, il
Dekor 1 Gypsum Mine, ru	Delaware Copper Mine, us	De Leon Springs, us
Delprats Underground Tourist Mine, au	Demanovska L'adova Jaskyna, sk	Demanovska Jaskyna Slobody, sk
Demir Baba, bg	Grotte des Demoiselles, fr	Demoiselle, fr
Denisova, ru	Derinkuyu Underground City, tr	Desert Cave Hotel, au
DeSoto Caverns Park, us	Deutsches Bergbau Museum, de	Deutsches Museum, de
Devataška peštera, bg	Grotte de la Devèze, fr	Devil's Den, us
Devil's Den Cave, us	Devil's Hole, bm	Devil's Icebox Cave, us
Devil's Sinkhole, us	Devil's Well, us	Dewstow Gardens and Grottoes, gb
Cueva del Diablo, bo	Caverna do Diabo, br	Cueva del Diabolo, es
Diamond Caverns, us	Diamond Cave, jp	Hotel Diar el Barbar, tn
Dich Long Cave and Pagoda, vn	Didyma Caves, gr	Diebeshöhle, de
Diebshöhle, de	Diefenbunker, ca	Karsthöhle Dienstedt, de
Burghöhle Dietfurt, de	Digger's Dream Underground Home, au	Dike Paku Gupha, np
Diktaion Antron, gr	Diktaeon Cave, gr	Dilek Magarasi, tr
Dim Magarasi, tr	Dimbulagala, lk	Dimnice Jama, si
Dinosaur Caves Park, us	Dino's Monstergrot, nl	Caverna del Dio Mithra, it
Gorges de la Diosaz, fr	Diósgyör-Tapolca barlang, hu	Diu Diu Cave, pg
Divaška Jama, si	Divje Jezero, si	Dixie Caverns, us
Đalovića Pecina, me	Djara Cave, eg	Djavolskoto Garlo Cave, bg
Djurovica Jama, hr	Dobakhol, in	Dobsinska Ladova Jaskyna, sk
Dodurgalar Mağarası, tr	Doktorshöhle, de	Dolaucothi Gold Mine, gb
Dolinenweg Hengen, de	Doling Cave, us	Dolní Vĕstonice, cz
Dombashawa Rocks and Painted Cave Site, zw	Jaskyna Domica, sk	Grotte de Domme, fr
Muches de Domqueur, fr	Grotta di S. Giovanni di Domusnovas, it	Donauversickerung, de
Cueva de Don Justo, es	Doolin Cave, ie	Dorking Caves, gb
Dorotheastolln, de	Grotta dei Dossi, it	Source du Doubs, fr
Dougout Ranch, us	Tham Doun, la	Down to Erth, au
Cuevas del Drach, es	Drachenhöhle, at	Drachenloch, ch
Gruta del Drago, pa	Caverne du Dragon, fr	Dragon Cave, cn
Grotta della Dragonara, it	Drakospilia, gr	Drakonina Pecina, hr
Grotte de la Draye Blanche, fr	Dreidärrischenhöhle, at	Dreieingangshöhle, de
Drei Kronen & Ehrt, de	Wasserfall Dreimühlen, de	Schwerspatmuseum Dreislar, de
Jaskyna Driny, sk	Drive-in Mine, au	Spilaio Drogkarati, gr
Les Drois Glands, lu	Druidenhain, de	Dubocka Pecina, rs
Dudley Canal Tunnels, gb	Historisches Kuperbergwerk Düppenweiler, de	Duivelsgrot, nl
Dunaskin Open Air Museum, gb	Dunbar Cave, us	Duncan Escarpment, ca
DunHuang Mogao Caves, cn	Dunmore Caves, ie	Dunsthöhle, de
Dunston Cave, tt	Dupnisa Mağarası, tr	Dureb Caves, na
Durham Mining Museum, gb	Gorges du Durnand, ch	Dust Devil Mine, us
Dyavolski Most, bg	Dzibilchaltún Cenote, mx	Cenote Dzitnup, mx
Eagle Cave, us	Eagle and High Peak Mine, us	Tomb of the Eagles, gb
Earby Mining Museum, gb	Eastwater Cavern, gb	Ebbor Gorge, gb
Grotte d'Ebbou, fr	Eberstadter Tropfsteinhöhle, de	Grottes des Echelles, fr
Echidna Chasm, au	Echo Caves, za	Eckert James River Cave, us
Écomusée d'Alsace, fr	Ecton Mine Educational Centre, gb	Edakkal, in
Mina de El Eden, mx	CSM Edgar Experimental Mine, us	Edna May Gold Mine, au
Egkleistra, cy	Musée des Égouts, be	Zinngrube Ehrenfriedersdorf, de
Eichener See, de	Ein Gedi, il	Einhornhöhle, de
Einhornhöhle, at	Eisensteinstollen, de	Eisensteinhöhle, at
Höhlenmuseum Eisensteinhöhle, at	Altes Eisinger Loch, de	Eiskapelle, de
Eiskogelhöhle, at	Eispalast Jungfraujoch, ch	Eispavillon Mittelallalin, ch
Eisriesenwelt, at	Cueva de Ekain, es	Ekotechnické Museum, cz
El-Haouaria, tn	El Capitan Cave, us	El Capulín Natural Pool, sv
Cuevas de El Castillo y Las Monedas, es	El Cerrejón Coal Mine, co	Eldorado Canyon Mine Tours, us
Elephanta Caves, in	Elkep Evi Cave Houses, tr	Jaunpils Elles Kalns, lv
Spilea Ellinokamára - Ellinokamára Cave, gr	Ellinwood Underground Tunnels, us	Elliot Lake Nuclear and Mining Museum, ca
Elliott Underground Quarry, us	Ellora Caves, in	El Majé Caves, pa
El Malpais National Monument, us	El Meson de la Cava, do	Cueva de El Pendo, es
El Puente Natural, pa	El Torcal de Antequera, es	Emerald Village, us
Pestera Emil Racovita, md	Muzeul de Speologie "Emil Racoviţă", ro	Emine Bair Khasar Cave, ua
Empire Mine State Historic Park, us	Empire Cave, us	Enchanted Cave, ph
Endless Caverns, us	Cueva de Los Enebralejos, es	Engenlochschlucht, at
Schieferbergwerk im Engi, ch	Englebrecht Cave, au	Enterprise Pit Mine Lookout, au
Entrische Kirche, at	Furna do Enxofre, pt	Le Blockhaus d'Éperlecques, fr
Eshab-i Kehf - Grotto of Seven Sleepers, tr	Musée de la mine Epinac, fr	Steinerne Rinne bei Erasbach, de
Tham Erawan, th	Erawan Falls, th	Bergbau- und Heimatmuseum Erbendorf, de
Erbendorfer Felsenkeller, de	Alte Hoffnung Erbstolln, de	Karstlehrpfad Breitscheid-Erdbach, de
Erdmannshöhle, de	Grube Erich, de	Erma Gorge, bg
Museo Minero de Riotinto "Ernest Lluch", es	Stollen Erwein II, de	Erzberg, at
Tropfsteinhöhle Erzenhausen, de	Esbelli Evi, tr	Minera Escondida, cl
Cenote Escondido, mx	Gruta do Escoural, pt	Gouffre d'Esparros, fr
Esperhöhle, de	Gruta del Espiritu Santo, sv	Essex Secret Bunker, gb
Esterlin, fr	Grutas de la Estrella, mx	Tunnel of Eupalinus, gr
Eureka Tunnel, us	Eureka Springs Underground, us	Sentier karstique à Excideuil, fr
Exeter's Underground Passages, gb	Gouffre de la Fage, fr	Fairy Cave, my
Buchan Caves - Fairy Cave, au	Fairy Dell Cave, au	Fakıllı Mağarası, tr
Bunker Falkenhagen, de	Falkensteiner Höhle, de	Falkirk Mine, us
Falling Waters Sink, us	Knappenloch Fallwindes, at	Cueva del Fantasma, ve
Fantastic Caverns, us	Fantasy Cave, bm	Fantasy World Caverns, us
Faris Caves, us	Le Faux Saulnier, fr	Fayes Underground Home, au
Buchan Caves - Federal Cave, au	Feengrotten, de	Grotte aux Fées, ch
Grube Feggendorfer Stolln, de	Felicitas Heilstollen, de	Besucherbergwerk Fell, de
Fels Cave, vu	Nürnberger Felsengänge, de	Die Felsenkeller in Egloffstein, de
Felsenkirche Idar-Oberstein, de	Hemer Felsenmeer, de	Fengyu Cave, cn
Fern Grotto, us	Fern and Roman Caves, gb	La Ferrassie, fr
Ferreira's Mine, za	Fertőrákosi Barlangszínház, hu	Špilja Feštinsko Kraljevstvo, hr
Lycian Tombs at Fethiye, tr	Grotta del Fico, it	Gorges du Fier, fr
Wombeyan Caves - Fig Tree Cave, au	Filipinas Larimar Mine, ca	St Fillan's Cave, gb
Domaine Filliatreau, fr	Finca Ixobel River Cave Trip, gt	Fingal's Cave, gb
Finnforsrövarnas grotta, se	Finsteres Loch, de	Besuchsbergwerk Finstergrund, de
Schaubergwerk "Finstertal" Asbach, de	Fire Clay Caverns, au	Fischbach, de
Fisher Cave, us	Fisher's Cave, us	Fish River Canyon, na
Five-Flower Lake, cn	Flaat Nikkelgruve, no	Flagstaff Lava River Cave, us
Flogbergets gruva, se	Grotte de Floreffe, be	Florence Mine Heritage Centre, gb
Florida Caverns State Park, us	Florida Museum of Natural History, us	Flour Cave, il
Fluweelengrot, nl	Fohlenhaus, de	Bergbaumuseum Fohnsdorf, at
Grotte de Foissac, fr	Folldal Gamle Gruver, no	Grottes de Folx-Les-Caves, be
Parc Industriel et Ferroviaire du Fond-de-Gras, lu	Le Fondry Des Chiens, be	Grotte de Font-de-Gaume, fr
Cimitero delle Fontanelle, it	Fontein Grot, aw	Minas Fonte Meu Bem Querer, br
Fontaine de Fontestorbes, fr	Abbaye Royale de Fontevraud, fr	Grottes de Fontirou, fr
Cova de la Font Major, es	Grotte de Fontrabiouse, fr	Cova Forada, es
Forbidden Caverns, us	Forchheimer Keller, de	Forestiere Underground Gardens, us
L'Aven Grotte de la Forestière, fr	La Fornace di Barbablù, it	Fort Rock Cave, us
Fort Stanton Cave, us	Grube Fortuna, de	La Fosse de Forges, fr
Grotte du Foulon, fr	Fountain Cave, us	Fountain Cavern, ai
Les mines d'argent du Fournel, fr	Fox River Caves, nz	Höhlenburg Fracstein, ch
Spilaion Frahthi - Frahthi Cave - Franchthi Cave, gr	Cueva de los Franceses, es	Franciscan Monastery, us
Francisco Dagohoy Cave, ph	Tomba Francois, it	Frank Aston Underground Museum, au
Franklin Mineral Museum & Mine Replica, us	Franklin Court Underground Museum, us	Grotta Grande del Vento - Grotte di Frasassi, it
Tempio del Valadier - Santa Maria di Frasassi - Infrasaxa - Grotte di Frasassi, it	Höhlenmuseum Frasdorf, de	Frauenmauerhöhle, at
Free Enterprise Health Mine, us	Furna de Frei Matias, pt	Schaubergwerk St. Anna am Freudenstein, de
Heilklimastollen Friedrich, at	Friedrich-Wilhelm-Stollen, de	Gouffre Friouato, ma
Eisenerzbergwerk Frischglück, de	Fröå gruva, se	Fudo-kutsu, jp
Cuevas de Fuentemolinos, es	Cuevas de Fuentes de Leon, es	Festung Fürigen, ch
Fürstenzeche, de	Grüner Bräu Keller, de	Fugaku Fuketsu, jp
Fugoppe-dokutsu, jp	Führerbunker, de	Fuji-do, jp
Fulford Cave, us	Funakubo Shonyudo, jp	Funatsu Tainai, jp
Furaku Cave, jp	Furen shonyudo, jp	Parc National de Furfooz, be
Gruta da Furninha, pt	Furong Dong, cn	Futenma Gongen, jp
Fuyang Cave, cn	Silberstollen Gabe Gottes, de	Goa Gajah, id
Galazia Spiliá - Blue Grotto, gr	Galázia Spiliá, gr	Galázia Spiliá - Blue Grotto - Korithi Cave, gr
Cueva de la Galiana, es	Miniera Gambatesa, it	Gamirasu Otel, tr
Sinks of Gandy, us	Gavi Gangadhareswara, in	Knappenloch Ganotz, at
Gap Cave, us	Gaping Ghyll, gb	Grutas de Garcia, mx
Gardner Cave, us	Sea Caves of the Gargano, it	Grottes Prehistorique de Gargas, fr
Gasparee Caves, tt	Gassel-Tropfsteinhöhle, at	Gasteiner Heilstollen, at
Cueva del Gato, es	Gaub Cave, na	Store Gaulstadgrotta, no
Mines Prehistòriques de Gavà, es	Parco Minerario Naturalistico di Gavorrano, it	Gaxian Dong, cn
Gcwihaba Caverns, bw	Geevor Tin Mine, gb	Geghard, am
Geikie Gorge, au	Geissenklösterle, de	Szent Gellért plébania, hu
Banícke Múzeum Gelnica, sk	Grotta del Gelo, it	Gemeentegrot, nl
Les Caves de la Genevraie, fr	Cueva de Genova, es	Grotta del Genovese, it
Genovevahöhle, de	Genovevahöhle, de	Genzan-kutsu, jp
Förderturm der Grube Georg, de	George's Gold Mine, au	Geraer Höhler, de
Spilaion Gerani, gr	German Underground Hospital, gb	German Military Underground Hospital, gb
German Naval Signals Headquarters, gb	La Grotta Dei Germogli, it	Colline de Géronde, ch
Kristallkluft Gerstenegg, ch	Grotto of Gethsemane, il	Ghardaia, dz
Peştera Ghetarul Focul Viu, ro	Giant's Cave, gb	Giants Cave, au
Grotta Gigante, it	Giligili Cave, pg	Gilmerton Cove, gb
Gimpel-Labyrinth, at	Ginryu-do, jp	Der Karstwanderweg am Südharz, de
Grotta Giusti Terme, it	Grotte de la Glacière, fr	Cave of Padre Glandorff, mx
Grube Glasebach, de	Travertine Terrasses in the Glatt Valley, de	Jaskinia Głęboka, pl
Besucherbergwerk Gleißinger-Fels, de	The turlough in Glenamaddy, ie	Glengowla Mines, ie
Glen Osmond Mine Tour, au	Glenwood Caverns, us	Gletscherschlucht, ch
Glifada, gr	Schaubergwerk Frisch Glück Glöckl, de	Waitomo Glowworm Grotto, nz
Tajemnicze Podziemne Miasto Gluszyca, pl	Göreme, tr	Mine d'antimoine à Goesdorf, lu
Besucherbergwerk Im Gößner, de	Goetz-Höhle, de	Gökgöl Magarasi, tr
Gokuraku-do, jp	Goldbergbaumuseum, de	GoldBottom Mine Tours, ca
Gold Bug Mine, us	Goldfield Mine, us	Besucherbergwerk Goldhausen, de
Gold King Mine, us	Gold Reef City, za	Gold Road Mine Tours, us
Große und Kleine Golke, de	Sótano de las Golondrinas, mx	Jama Golubinka, hr
Golubinsky Proval, ru	Golubnjaca Pecina, hr	Blue Lake, ru
Gomantong Caves, my	Gombasecka Jaskyna, sk	Eisenbergwerk Gonzen AG, ch
Good Enough Mine, us	Good Luck Cave, my	Goodluck Mine, gb
Great Ocean Road, au	Gossidong Gul, kr	Gosudong Gul, kr
Gotthard Basistunnel, ch	Vallée troglodytique des Goupillières, fr	Gouvernéto Cave - Bears' Cave, gr
Goya shonyudo, jp	Grotte de Goyet, be	Goyomatsu shonyudo, jp
Gruvmuseet Grängesberg, se	Graham Cave, us	Granatium, at
Gran Cenote, mx	Grand Caverns, us	Jenolan Caves - Grand Arch, au
Grand Canyon Caverns, us	Grand Canyon, us	Les Grandes Canalettes, fr
Grand Gulf State Park, us	Grotte du Grand Roc, fr	Caverna La Gran Galería, cr
Grapčeva Špilja, hr	Graselhöhle, at	Grasslhöhle, at
Bergbaumuseum Graubünden, ch	Maisons troglodytes du Graufthal, fr	Great Cave, ky
Great Masson Cavern, gb	Great Onyx Cave, us	Great Orme Bronze Age Copper Mines, gb
Great Rutland Cavern, gb	Underground Great Wall, cn	Greenbrier Bunker, us
Green Grotto Caves, jm	Green's Cave, us	Greenwich Foot Tunnel, gb
Greig's Scenic Caves, ca	Caves Louis de Grenelle, fr	Grgosova Špilja, hr
Griffener Tropfsteinhöhle, at	Schaubergwerk am Grillenberg, at	Grimes Graves, gb
Felslabor Grimsel, ch	Kraftwerk Grimsel 2, ch	Grjótagjá, is
Gronligrotta, no	Große Grotte, de	Großer Lochstein, de
Große Scheuer, de	Grottenaquarium, nl	Höhlenburg Grottenstein, ch
The Grotto, au	The Grotto, mp	The Grove Park Inn, us
Gruebisbalm Höhle, ch	Gründelloch, de	Gruve 3, no
Gruve 7, no	Gruvkapellet, se	Grza, rs
Guacara Taina, do	Cueva del Guácharo, ve	Cueva de los Guácharos, co
Guadirikiri Grot, aw	Guadix Cave Houses, es	Cueva de Guahedum, es
Guajataca Forest, pr	Cueva de Gualicho, ar	Guanma Dong, cn
Barranco de Guayadeque, es	Bergbaumuseum und Besucherbergwerk Grube Günnersdorf, de	Musée des Gueules Rouges du Var et de la Bauxite, fr
Guhantara, in	Skansen Podziemny "Guido" w Zabrzu, pl	Guimit Cave, ph
Gujohachiman dai-shonyudo, jp	Guler Ice Caves, us	Gunnadoo Gold Mine, au
Gunns Plains Caves, au	Gunung Senyum Caves, my	Gupteswor Mahadev Gufa, np
Gupteswar Gupha, in	Gurugem Phuk, cn	Gußmannhöhle, de
Grube Gustav, de	Gutenberger Höhle, de	Gutmana Ala, lv
Guyaju Caves, cn	Gympie Gold Mining and Historical Museum, au	Gyokusen-do, jp
Haan Gul, kr	Hachijo fuketsu, jp	Hack Green Secret Nuclear Bunker, gb
Hadeland Bergverksmuseum, no	Ha Ha Tonka State Park, us	Haig Colliery Mining Museum, gb
Haikong Cave, cn	Hainault Gold Mine, au	Haizhou Mine, cn
Hakuba-do, jp	Hakuun-do, jp	Bergbaumuseum Hall, at
Halliggye Fogou, gb	Hallstatt, at	Hal Saflieni Hypogeum, mt
Hamilton Pool, us	Grotte Hamma, dz	Cuevas de Hams, es
Grottes de Han-sur-Lesse, be	Hana Lava Tube, us	Hang Son Doong, vn
Hannan's North Tourist Mine - The Mining Hall Of Fame, au	Hantongshan Shenxian Dong, cn	Haramiiska Dupka, bg
Musée de la Mine d'Harchies, be	Hard Tack Mine, us	Hard Times Mine, au
Haritun Cave, il	Spilia Harkadio - Harkadio Cave, gr	Harmanecká Jaskyna, sk
Bunker Harnekop, de	Harrie Wood Cave, au	Harrison's Cave, bb
Harman 1, au	Hartness House, us	Harwood's Hole, nz
Għar Hasan, mt	Hashidate shonyudo, jp	Hashima Mine, jp
Hastings Caves, au	Musée de l'Abri de Hatten, fr	Haunted Cave, us
Hausertorstollen, de	Les Hautes Roches, fr	Ardoisière Haut-Martelange, lu
Hawkstone Park, gb	Hazan Caves, il	Besucherbergwerk "Heilige Drei Könige", de
Goldgräberdorf Heiligenblut, at	Heimensteinhöhle, de	Heimkehle, de
Heineman Winery - Crystal Cave, us	Heinrichshöhle, de	Heinrich-Kocher-Stollen, de
Hei Shan Gou, cn	Festung Heldsberg, ch	Restaurant l'Hélianthe, fr
Hella-Glück-Stollen, de	Hellfire Corner, gb	Helme Koopad, ee
Henneth Annûn, XX	Herbstlabyrinth-Adventhöhle-System, de	Grottes d'Hercules, ma
Heritage Gold Mine Park, us	Hermannshöhle, de	Hermannshöhle, at
Höhle auf dem Großen Hermannstein, de	Hermit's Cave, au	Grutas los Herrara, mx
Schiefergrube Herrenberg, de	Herts Young Mariners Base, gb	Hezekiah's Tunnel, il
Hibbing Taconite Tours, us	Hickelhöhle, de	Hida dai-shonyudo, jp
Hidden Forest Cave, us	Hidden River Cave, us	Hidden Worlds Cenotes, mx
Hidee Gold Mine, us	Hill Annex Mine, us	Himalaya Tourmaline Mine, us
Himmelfahrt Fundgrube, de	Himmelsbergstollen, de	Himmlisch Heer, de
Hinagdanan Cave, ph	Hirano-do, jp	Hito-ana, jp
Hobbiton, nz	Schaubergwerk Hochfeld, at	Hochkarschacht, at
Hocking Hills State Park, us	Hodruša Hámre, sk	Hölloch, ch
Höhlenkundliches Museum, de	Schaubergwerk Hofergraben, at	Hoffnungsstollen Todtmoos, de
Hohenfels-Essinger Eishöhlen, de	Magnesitstollen Hohentauern, at	Hohlenstein, de
Hohler Fels, de	Hohler Stein, de	Tham Hoi, la
Hole N" The Rock, us	Hole in the Rock, nz	Holkovsky Monastery, ru
Hollenkammer, de	Schloßberghöhlen, de	Homestake Mine, us
Homestead Crater, us	Honey Branch Cave, us	Honeycomb Cave, nz
Honeycomb Cave, au	Honister Slate Mine, gb	Hopemore Mine, us
Hopewell Colliery, gb	Hoq Cave, ye	Horne Lake Caves, ca
Hornkullens gruvor, se	Cueva de Hornos de la Peña, es	Grand Hornu, be
Hoshino-no ana, jp	Hospital Cave, vn	Hotel Sassi Di Matera Diffuso, it
Grottes des 1001 Nuits, be	Downtown Houston Tunnel System, us	Hoverbergsgrottan, se
Howe Caverns, us	How Stean Gorge, gb	Hranická propast, cz
Gruta de Huagapo, pe	Huanglong Dong, cn	Huangzhu Dong, cn
Huashan Quarries, cn	Huayan Temple, cn	Hubbard's Cave, us
Peştera Huda lui Papară, ro	Huda Luknja, si	Besucherbergwerk Grube "Hühn", de
Hülbener Tropfsteinhöhle, de	Cueva Huerta, es	Schaubergwerk Hüttenberg, at
Hugh's Dale Waterfall, au	Grotte des Huguenots, fr	Huliba Grot, aw
Hull Rust Mine, us	Humphrey Kynaston's Cave, gb	Hundalm Eis- und Tropfsteinhöhle, at
Hungerbrunnen, de	Dong Huong Tich, vn	Hurricane River Cave, us
Husitské muzeum, cz	Huto and Kamarband Cave, ir	Hwaam Gul, kr
Hwanggeum Dong, cn	Hwanseon Gul, kr	Hyeopjae Gul - Ssangyong Gul, kr
Iagodinska Peštera, bg	Peştera Ialomita, ro	Bergbaumuseum Ibbenbüren, de
Iberger Tropfsteinhöhle, de	Ice Cave, us	Ice Caves Mountain, us
Ichetucknee Spring, us	Għar Id-Duhhan, mt	Idagrotte, de
Idaho's Mammoth Cave, us	Idaion Antron, gr	Ignateva Pestera, ru
Iho-Eleru, ng	Cenote Ik Kil, mx	Ikura-do, jp
Għar il-Kbir, mt	Spilia Illithias - Cave of Ilithias, gr	La Grotte (Illetas Club Playa), es
Illinois Caverns, us	Il-Maqluba, mt	Ilsenhöhle, de
Jenolan Caves - Imperial Cave, au	Inanke Cave, zw	Inazumi suichu shonyudo, jp
Puente del Inca, ar	Incirli Cave, cy	Indian Caverns, us
Indian Cave, ag	Indian Echo Caverns, us	Indian Cave State Park, us
Indian Cave Village, us	Cuevas del Indio, cu	Grotta dell'Onferno, it
Cueva del Infierno, pr	3rd Infiltration Tunnel, kr	Ingleborough Cave, gb
Ingleborough Cave, gb	Injun Joe's Cave, us	Qaura - Inland Sea, mt
Inner Space Cavern, us	Institutul de Speologie "Emil Racoviţă", ro	Insuyu Mağarasın, tr
Intermittent Spring, us	Interstate Caves, us	Limni Ioanninon - Lake Pamvotis, gr
Ipswich Caves, jm	Irimizu shonyudo, jp	Ironbridge Gorge Museum, gb
Iron Mountain Iron Mine, us	Ishigaki Do, jp	Grotte Is Janas, it
Cava d'Ispica, it	Voragine di Ispinigoli, it	Les Grottes Isturitz et Oxocelhaya, fr
Grotte Is Zuddas, it	Ivanovo Rock Churches, bg	Iwami Ginzan, jp
Izuru shonyudo, jp	Jacks Blowhole, nz	Jacob's Cave, us
Jagersfontein Mine, za	Jameos del Agua, es	James Bond Rock, th
Štola Jana Evangelisty, cz	Podziemna Trasa w Jarosławiu, pl	Jasovska Jaskyna, sk
Jasujeong, kr	Javoříčské jeskyně, cz	Mina de la Jayona, es
Magharet Jeita, lb	Jeongbang Waterfall, kr	Jersey Cave, au
La Cueva del tío Jesús, es	Jewel Cave, us	Margaret River Caves - Jewel Cave, au
Jiguandong, cn	Jihlavské podzemí, cz	Jillabenan Cave, au
Jing Dong Da Rong Dong, cn	Jiulongdong, cn	Jiutian Dong, cn
Jiutian Dong, cn	Jiuxiang Scenic Resort, cn	Jiuxiao Biyundong, cn
Jobitzinaj Cave, gt	Joel Mine, za	Johannisfelsen, de
Poarta Lui Johele, ro	Goa Jomblang, id	Jomon shonyudo, jp
Grottes de Jonas, fr	Josefov Podzemi, cz	Musée de la Mine à Joseph-Else, fr
Les Journées de la Rose, fr	Jenolan Caves - Jubilee Cave, au	Internationales Fledermaus-Museum Julianenhof, de
Cavernas de Jumandi, ec	Junagadh Caves, in	Wombeyan Caves - Junction Cave, au
Jungfernhöhle, de	Junkundar Coal Mine, in	Grutas de Juxtlahuaca, mx
Kaaiman's Grotto, za	Magharet Qadisha, lb	Bergbaumuseum und Besucherbergwerk Käpfnach, ch
Tham Kaew Komol, th	Kagekiyo-do, jp	Kahlensteinhöhle, de
Kailash Gufa, in	Kain Hitam - The Painted Cave, my	Kajlaška peštera, bg
Kaklik Mağarası, tr	Kakushöhle, de	Kalabera Cave, mp
Kalkstensgrottor, se	Hohler Stein, de	Emmi Cheese Cave Kaltbach, ch
Kamarai Gorge, gr	Spilaio Kamares - Cave Kamaron - Kamares Cave, gr	Kammerbacher Höhle, de
Haus des Bergmanns, de	Besucherbergwerk Kamsdorf, de	Cizinecký vstup do kanalizace, cz
Kanba-no Oni-no ana, jp	Las Cuevas de K'an Ba, gt	Kanheri Caves, in
Grotten Van Kanne, be	Kanowna Belle Goldmines, au	Kansas Underground Salt Museum, us
Mogharet el Kantara, ly	Kantun Chi Caves, mx	Tham Kao Rao, la
Bunker am Kap Arkona, de	Kap-Kutan Cave, tm	Kapova Cave, ru
Kåppasjåkkagrottorna, se	Kapsia Cave, gr	Kapucínská krypta, cz
Karaca Mağarası, tr	Karaftu Cave, ir	Karain Mağarası, tr
Karl-May-Höhle, de	Karla Caves, in	Karlyuk Caves, tm
Grutas Karmidas, mx	Karstkundlicher Wanderweg Laichingen, de	Kartchner Caverns State Park, us
Spilaio Kastritza - Kastritsa Cave, gr	Spilia Katafiki, gr	Spilia Katafygi, gr
Ghar Katalehkhor, ir	Katano ana, jp	Kåtavikens grottstig, se
Katavothres - Katabothres, gr	Katavothres, gr	Katerinska jeskyne, cz
Katerloch, at	Katflaap Catacombs, mv	Kathu Mining Museum, th
Tombs of the Kings, cy	Katpatuka Cave Hotel, tr	Kaumana Cave, us
Kaupo Ala, lv	Kawachi Fuketsu, jp	Kawiti Glowworm Caves, nz
Kayadem Cave Hotel, tr	Musée National des Mines, lu	Kaymaklý Underground City, tr
Kazanluk Tomb, bg	Kazumura Cave, us	Trypas Kefalas - Cave of Kefala, gr
Gua Kelam, my	Gua Kelam 2, my	Gua Kelawar, my
Kelebek Hotel, tr	Kelly Mine, gb	Kelly Hill Caves, au
Cave of Kelpius, us	Kelvedon Hatch Secret Nuclear Bunker, gb	Kennecott Mine, us
Kennedy Mine, us	Kents Cavern, gb	Kentucky Caverns, us
Kentucky Coal Mining Museum, us	Caves of Keshcorran, ie	Kesselfallklamm, at
Keswick Mining Museum, gb	Magharet Kfar Him, lb	Khandagiri Cave, in
Khangkhui Mangsor, in	Tham Khao Khun Krathing, th	Tham Khao Kop, th
Tham Khao Kriep Ngoen, th	Tham Khao Luang, th	Tham Khao Ngoen, th
Tham Khao No, th	Khao Tham Phra, th	Khayon Cave, mm
Khewra Salt Mines, pk	Kh'ndzoresk, am	Tham Khuha Sawan, th
Kickapoo Cavern State Park, us	Kickapoo Indian Caverns, us	Kiev Pechersk Lavra, ua
Besucherbergwerk Kilianstollen, de	Killhope, gb	Killing Caves, kh
Kimberley Mine - Big Hole, za	Kimberley Underground Mining Railway, ca	Kimnyongsa Gul, kr
Kin-nisshu-do, jp	King's Cave, gb	King Arthur's Labyrinth, gb
King Arthur's Cave, gb	King Edward Mine, gb	King George V Cave, au
König-Otto-Tropfsteinhöhle, de	Kingsgate Mines, au	King Solomon Cave, au
King Solomon's Mines, il	Gold Cave Café and Bonsai Garden, jp	LKAB InfoMine Kiruna, se
Kish Underground City, ir	Kitley Show Cave, gb	Kittelsthaler Tropfsteinhöhle, de
Kitum Cave, ke	Kitzlochklamm, at	Kizil Caves, cn
Klackbergs Gruvfält, se	Bergbaumuseum Klagenfurt, at	Klatovské katakomby, cz
Klausenhöhle, de	Kleine Berlin, it	Besucherbergwerk Kleinenbremen, de
Gletschergrotte Klein Matterhorn, ch	Kleinsteinhöhle, de	Edukacyjna w Starej Kopalni Uranu w Kletnie, pl
Kleva gruva, se	Klodawa Salt Mine, pl	Podziemna Trasa Turystyczna 1000-Lecia Panstwa Polskiego w Klodzku, pl
Twierdza Klodzka, pl	Cave Church Klösterl, de	Klosterstollen Barsinghausen, de
Klusfelsen, de	Kluterthöhle, de	Knalla gruvmuseum, se
Lausitzer Bergbaumuseum Knappenrode, de	Schachtanlage Knesebeck, de	Knife River Coal Mine & Bucket Site, us
Kristallhöhle Kobelwald, ch	Legaga la ga Kobokwe, bw	Koboriya shonyudo, jp
Kocaín Mağarası, tr	Besucherbergwerk in Bad Friedrichshall-Kochendorf, de	Kocherursprung, de
De Beers Open Mine, za	Kojima Kurago, jp	Kokopelli's Cave, us
Kolar Gold Fields, in	Kolbinger Höhle, de	Kolowrathhöhle, at
Komakado Fuketsu, jp	Komati Gorge, za	Kom es-Shouqafa, eg
Komori kutsu, jp	Kompong Trach Cave, kh	Konĕpruské jeskyně, cz
Tham Kong Lor, la	Norsk Bergverksmuseum Kongsberg, no	Konispol Cave, al
Konnerud Gruver, no	Schacht Konrad, de	Konungastollen, se
Koori-ana, jp	Wombeyan Caves - Kooringa Cave, au	Podziemne Muzeum "Kopalnia Zlota" w Zlotym Stoku, pl
Stora Kopparberget, se	Koppartorp, se	Koppenbrüllerhöhle, at
Korallgrottan, se	Korkinsk Coal Mine, ru	Korsanini Mağarası, tr
Korykio Andro - Corycian Cave, gr	Kostanjevica Jama, si	Kourtaliotiko Gorge, gr
Spilia Koutouki - Koutouki Cave, gr	Sztolnie Kowary, pl	Kow Ata Underground Lake, tm
Wat Tham Krabok, th	Králova jeskynĕ, cz	Krapina Cave, hr
Tham Krasae, th	Krasnaja pestera, ua	Krasnohorska Jaskyna, sk
Krasny Klutch Spring, ru	Kraushöhle, at	Karstlehrpfad Krippenstein, at
Kristallgänge, de	Kristalnaja pestera, ua	Kristinebergs gruva, se
Krizna Jama, si	Nacionalni park Krka, hr	Skansen Górniczy "Królowa Luiza" w Zabrzu, pl
Kromdraai Gold Mine, za	Castello di Mezzocorona, it	Höhlenburg Kropfenstein, ch
Graphitbergwerk Kropfmühl, de	Krška jama - izvir Krke, si	Krug, fr
Krushuna, bg	Prahistoryczne Kopalnie Krzemienia w Krzemionkach, pl	Kubacher Kristallhöhle, de
Kühlloch, at	Fiery Caves of Kuhi-Malik, tj	Kuhstall, de
Kula Kai Caverns, us	Kulturbunker Barbarastollen, de	Kumaso ana, jp
Kumganggul, kr	Kumistavi Cave, ge	Kungur ledenica pestera, ru
Kunming Natural History Museum of Zoology, cn	Historischer Kunstbunker, de	Kupferberg Museum, de
Bergbau-Museum Kupferberg, de	Schaubergwerk Kupferplatte, at	Kurjey Lhakhang, bt
Hrádek a důl Osel Kutná Hora, cz	Kutumsar Gufa, in	Kverkfjöll, is
Kyrk Gyz Cave, tm	Kyusen-do, jp	Kyzyl-Yar Cave, ru
Laas Gaal, so	Grotte de Labastide, fr	Grotte de Labeil, fr
Budavári Labirinthus, hu	Riv. Souterraine de Labouiche, fr	Lac Souterrain St-Léonard, ch
Grotte de Lacave, fr	Restaurant La Cave, fr	Laguna Lachua, gt
Lackawanna Coal Mine Tour, us	La Claustra Hotel, ch	La Coupole, fr
Bunker Ladeburg, de	Lærdalstunnelen, no	Caverne Laflèche Caves, ca
La Fuente, pa	Gruta da Lage Branca, br	Gruta do Lago Azul, br
LagOmar, es	La Gruta, pa	La Gruta, mx
Laguna Cave, bz	Laichinger Tiefenhöhle, de	Margaret River Caves - Lake Cave, au
Lake Shasta Caverns, us	Lalibela, et	Musée de la Mine à La Machine, fr
Lama La Vita, it	Grotta Lamalunga, it	Lammeröfen, at
Grottes de Lamouroux, fr	Grotta dei Lamponi, it	Lamprechtsofen, at
Hornické muzeum OKD Landek, cz	Lang's Cave, my	Langbans Mines, se
Höhlenwohnungen in Langenstein, de	Kupferschieferbergwerk Lange Wand, de	Lanner Gorge, za
Lanquín Caves, gt	Lanson, fr	Lao Mei, cn
Virgem da Lapa, br	Gruta Lapa Doce, br	Gruta do Lapão, br
Cueva de La Peña, es	Gruta da Lapinha, br	Les Lapidiales, fr
Għar Lapsi, mt	Historische Kupferzeche am Larzenbach, at	La Salina, es
Grotte de Lascaux, fr	Las Cuevas, es	Cueva de las Manos, ar
Cueva de la Lastrilla, es	Latomie, it	Abri de Laugerie-Haute, fr
Launois Père & Fils, fr	Laurel Caverns, us	Laurent-Perrier, fr
Grotte des Lauriers, fr	Historisches Silberbergwerk Lautenthals Glück, de	Lava Beds Caves, us
La Valette Underground Military Museum, gb	Lava River Cave - Newberry National Volcanic Monument, us	Grotte de Laveuses, fr
Tham Lawa, th	Goa Lawah, id	Laxey Wheel, gb
Layser Cave, us	Leamington Caves, bm	Lebanon Silver Mine, us
Salzbergwerk von Bex, ch	Le Caveau, fr	Cueva de la Lechazas, pe
Lechuguilla, us	Ledenika, bg	Ledge View Nature Center, us
Ledová jeskynĕ, cz	Technisches Denkmal Historischer Schieferbergbau Lehesten, de	Lehman Caves, us
Leichtweißhöhle, de	Leiðarendi, is	Musée de la Mine Le Molay Littry, fr
Volcan de Lemptégy, fr	Eisenerzgrube Lengede-Broistedt, de	Grube Lengenbach, ch
Lenore Caves, us	Schaubergwerk Leogang, at	Grube Leonie, de
Le Prince Noir, fr	Musée National de Préhistoire, fr	Les Maisons de Cappadoce, tr
Les Terrasses d'Uchisar, tr	Leveäniemigruvan, se	Leviathan Lava Tube, ke
Centre Historique Minier Lewarde, fr	Lewis and Clark Caverns State Park, us	Lewis Merthyr Colliery, gb
Pertouse de Leytro, ch	Liang Bua Cave, id	Liboriusklause, de
Lidbergsgrottorna, se	Carrières de la Lie, fr	Liechtensteinklamm, at
Lighthouse Cave, bs	Peştera Liliecilor, ro	Rimstone Pools of the Lillach River, de
Lima Catacombs, pe	Limestone Caves, au	Grotte de Limousis, fr
Lincoln Caverns, us	Grotte de Lindéralique, nc	Linggu Dong, cn
Lingqi Karst Cave, cn	Ling Shan Cave, cn	Linkenboldhöhle, de
Linville Caverns, us	Lion Salt Works, gb	Lipci Cave, me
Lippoldshöhle, de	Lipska Pecina, me	Lisboa Roman Galleries, pt
Source du Lison, fr	Liss Ard, ie	Lithgow State Mine, au
Gruvemuseet på Litlabø, no	Fort de Litroz, ch	Little American Mine, us
Little Hustan Cave, ca	Liuku Show Cave, cn	LKAB Gruvmuseum, se
Cueva de Llamazares, es	The Welsh Slate Museum, gb	Chwarel Hên Llanfair, gb
Cuevo del Llanos, es	Llechwedd Slate Cavern, gb	Llewelyn's Cave, gb
Llywernog Silver-Lead Mine Museum, gb	Local Cave House, tr	Höhlenburg Loch, de
Lockgruvan, se	Lockport Cave Raceway Tour, us	Locso-on Cave, ph
Lóczy barlang, hu	Tham Lod, th	Lötschberg-Basistunnel, ch
Loizos Cave, gr	Jaskinia Łokietka, pl	Gammelgruva Løkken, no
Špilja Lokvarka, hr	Grutas de Lol-Tún, mx	Lomax Placer Mine, us
Grotte de Lombrives, fr	London Underground, gb	Lonetopf, de
Loneversickerung, de	Longgong Caves, cn	Longhorn Caverns, us
Longkong Dong, cn	Long Men Dong, cn	Longmen Grottoes, cn
Longquan Cave, cn	Long Tunnel Extended Gold Mine, au	Longyearbreen Grotte, no
Loos Koboltgruva, se	Lost Mine, us	Lost River Caverns, us
Lost River Cave and Valley, us	Lost Sea, us	Lost World Caverns, us
The Lost World, nz	Cueva de Los Verdes, es	Lotus Cave, cn
Source de la Loue, fr	Loughareema, ie	Grotto of Massabielle, fr
La Louvière, be	Tham Luang Pha Wiang, th	Lubang Jepang, id
Lublova Torturak, mv	Jenolan Caves - Lucas Cave, au	Museo de La Lucha Obera, mx
Ludi Yan - Reed Flute Cave, cn	Ludvika Gruvmuseum, se	Ludwigshöhle, de
Lügenstein, de	Lugnås Minnesfjäll, se	Grotte de la Luire, fr
Lummelundagrottan, se	Lupercale, it	Luray Caverns, us
Lurgrotte Peggau, at	Lurgrotte Semriach, at	Lusk Cave, ca
Grottes de Lustin, be	Luzit Caves, il	Lydford Gorge, gb
Lydstep Caverns, gb	Spilaio Aggitis, gr	Maastricht Kazematten, nl
Macahambus Cave, ph	Museu Vulcanoespeleológico "Machado Fagundes", pt	Ma'arat HaMachpelah, il
Mackinac Island State Park, us	Propast Macocha, cz	Macraes Mine, nz
Grotte de la Madelaine, fr	Abri la Madelene, fr	Grotta della Madonna, it
Santuario della Madonna della Grotta, it	Gua Madu, my	Tham Mae Lana, th
Maeshowe, gb	Tham Mae Usa, th	Tham Mae Usu, th
Magili, am	Magnanerie de Bourré, fr	Farmacia del Mago Greguro, it
Magura, bg	Mahabalipuram Caves, in	Mahendra Gupha, cn
Mahendra Guffa, np	Mailly Grand Cru, fr	Maimu Cave, ee
Maison Forte, fr	Cueva de la Majahua, mx	Majlis Al-Jin, om
Makauwahi Cave, us	Maki-do, jp	Malå Geo Museum, se
Tham Malai, th	Malá Pravčická Brána, cz	Malinta Tunnel, ph
Malmberget Iron Mine, se	Malovaný sklep, cz	Sentier Karstique des Malrochers, fr
Cueva de Maltravieso, es	Jama Mamet, hr	Mammoth Spring, us
Mammoth Cave National Park, us	Margaret River Caves - Mammoth Cave, au	Mammoth Hot Springs, us
Dachstein-Mammuthöhle, at	Manchester Cave, us	Gruta da Mangabeira, br
Minas de Manganeso de Puras de Villafranca, es	Mangapwani Slave Cave, tz	Mangapwani Coral Cavern, tz
MangupKale, ua	Manita pećina, hr	Manitou Cliff Dwellings, us
Manjang Gul, kr	Manjushree Gufa, np	Mansfeld Museum, de
Grotta Maona, it	Maori Leap Cave, nz	Gruta do Maquiné, br
Maquoketa Caves State Park, us	Marakoopa Cave, au	Maramagambo Caves, ug
Grotta di Maratea, it	Maratika Gufa, np	Grutas de las Maravillas, es
Cueva de las Maravillas, do	Marble Arch Caves, ie	Domaine de Marc Brédif, fr
Le musée de la Mine Marcel Maulini, fr	Cuevas de la Mare de Deu, es	Marengo Cave National Landmark, us
Vai Marere, ck	Maresha, il	Margate Caves, gb
Margate Grotto, gb	Cave à Margot, fr	Gruta da Maria Encantada, pt
Besucherbergwerk Marie Louise Stolln, de	Marienglashöhle, de	Marienschlucht, de
Mark Twain Cave, us	Besucherbergwerk Markus Semmler, de	Marmarospilia, gr
Maropeng, za	Les Caves de Marson, fr	Marstrand Caves, se
G.H. Martel et C°, fr	Martha Mine, nz	Martinsloch, ch
Marvel Cave, us	Mary Campbell Cave, us	Mary King's Close, gb
Aven de Marzal, fr	Miniera Marzoli, it	Mascot Mine, ca
Cuevas del Masical, hn	Rifugio Antiaereo Martana, it	Museo della Miniera Massa Marittima, it
Museo di Arte e Storia delle Miniere, it	Maison des Pierreux de Massangis, fr	Minas de Matahambre, cu
Matala Caves, gr	Grottes de Matata, fr	Tham Mat Cha Pla Won, th
Matchless Mine, us	The Cave Homes of Matmâta, tn	Grotta Matromania, it
Jaskyňa mŕtvych netopierov, sk	Mátyáshegy barlang, hu	Mau Mau Caves, ke
Mavri Spilia - Black Cave, gr	Mavri Spilia - Black Cave, gr	Krem Mawsmai, in
Grottes de Maxange, fr	Maximiliansgrotte, de	Maximushöhle - The "Catacombs" of Salzburg, at
Mayener Grubenfeld, de	Mazi Underground Settlement, tr	McConnell Springs, us
Meadowcroft Rockshelter, us	Jaskinia w Mechowie, pl	Mecsek Bányászati Múzeum, hu
Medicine Rocks State Park, us	Grotte de Médous, fr	Höhler von Meerane, de
Louisville Mega Cavern, us	Megali Spilia, gr	Mega Spiléo - The Great Cave, gr
Mejiro-do, jp	Spilaio tou Melidoniou, gr	Limni Melissani, gr
Musée des Mines d'Argent des Rois Francs, fr	Mellieħa Cave and Spring, mt	Cueva de Mendukilo, es
Menfudo shonyudo, jp	Cuevas de Menga y Viera, es	Meramec Caverns, us
Grotte delle Meraviglie, it	Mercer Caverns, us	Mercier, fr
Grotte de la Mer de Glace, fr	Sentier Karstique du Grand Bois, fr	Erlebnis Bergwerk Merkers, de
Merlin's Cave, gb	Mermerna Pecina, rs	Pozzo del Merro, it
Grotte Prehistorique des Merveilles, fr	Grotte Merveilleuse, dz	Grotte La Merveilleuse, be
Mesa Verde NP, us	Grottes de Beaume les Messieurs, fr	Mészégető-forrásbarlang, hu
Trassbergwerk Meurin, de	Die Meyerschen Stollen, ch	Peştera Meziad, ro
Rudnik svinca in cinka Mežica, si	Micheongul, kr	La Micoque, fr
Miedzyrzecki Rejon Umocniony, pl	Grotte de Milandre, ch	Milarepa's Cave, cn
Milatos Andron, gr	Mileştii Mici, md	Milk Grotto Chapel, il
Millennium Underground Museum, hu	Millie Mine Bat Cave, us	Cueva del Milodon, cl
Milton House, us	La Forteresse de Mimoyecques, fr	Museo de la Mineria, mx
Cueva de Las Minas, gt	Mindemoya Cave, ca	Mine Howe, gb
Minera Lead Mines, gb	Mineraliengrotte Vorderkrimml, at	Miners' Dugouts, au
Miners Heritage Walk-In Mine, au	Mines & Meadows ATV Riding Resort, us	Mines View Park, ph
Minigill Cave, ca	Minnesota Museum Of Mining, us	Smaragdgruvene Byrud Gård, no
Minnetonka Cave, us	Minntac Plant, us	Mintaro Slate Quarries, au
Mir Diamond Mine, ru	Grutas de Mira de Aire, pt	Miskolc-Tapolca, hu
Mission Mine, us	Cave Creek Mistress Mine, us	Mitchell Caverns, us
Mitchells Gully Gold Mine, nz	Mitchelstown Cave, ie	Mitsugo shonyudo, jp
Mittelbau Dora - Mittelwerk Dora, de	Miyama Shonyudo, jp	Mizamiza Cave, tz
Mizonoguchi dokutsu, jp	Mladečské jeskyně, cz	Moaning Caverns, us
Missouri Botanical Garden, us	Modra Spilia - Blue Grotto, hr	Modrić Špilja, hr
Grutas da Moeda, pt	Mønsted Kalkgruber, dk	Moët & Chandon, fr
Grotte des Moidons, fr	La Cave Aux Moines, fr	Pulo di Molfetta, it
Puig des Molins Nekropolis, es	Mollie Kathleen Mine, us	Museum of Old and New Art, au
Món De Sal, es	Karstlehrpfad Monheimer Alb, de	Monks' Prison, gr
Les Caves Monmousseau, fr	Parco Minerario del Monte Amiata, it	Grotta del Monte Capriolo, it
Museo delle Miniere di Montecatini, it	Montelimar Cave, ni	Monte Sant'Angelo sul Gargano, it
Grotta di Montevicoli, it	Montezuma Castle National Monument, us	Montezuma Well, us
Grotte de Mont-Fat, be	La Ville Souterraine, ca	Margaret River Caves - Moondyne Cave, au
Moon Water Cave, cn	Tunnels of Moose Jaw, ca	Tham Morakot, th
Schaubergwerk Morassina, de	Morden Colliery, ca	Mordloch, de
Morefield Gem Mine, us	Morenci Mine, us	Cueva de Morgan, co
Grottes de Morgat, fr	Khazad-dûm, XX	Caverna do Morro do Couto, br
Morro do Ouro, br	Caverna do Morro Preto, br	Morwellham Quay, gb
Moscow Metro, ru	Mo So Cave, vn	Mother Shipton's Cave, gb
Motuanga Cave, ck	Les Moulins Souterrains du Col-des-Roches au Locle, ch	Grotte de Moulis, fr
Laboratoire Souterrain de Moulis, fr	Cave of the Mounds, us	Mountain Maid Gold Mine, au
Mount Lyell Copper Mine, au	Cova dos Mouros, pt	Abri du Moustier, fr
Peştera Movile, ro	Mozrovi, am	Mramornaja, ua
Špilja Mramornica, hr	Jaskinia Mroźna, pl	Bergbau- und Heimatmuseum Mühlbach, at
Mühlbachquellhöhle, de	Spring von Mühlberg, de	Mühlheimer Höhle, de
Alaunwerk Mühlwand, de	Peştera Muierilor, ro	Mulgol Cave, kr
Wombeyan Caves - Mulwaree Cave, au	Mumba Rockshelter, tz	G.H. Mumm, fr
Muqattam Mountain Cave Cathedral, eg	Cueva de los Murciélagos, es	Murrindal Caves, au
Musée du Vin, fr	Musejnaja, ru	Museo Arqueológico, es
Museo Canario, es	Museu de Minas Ouro Prêto, br	Museu de Temàtica Espeleològica, es
Slovenské múzeum ochrany prírody a jaskyniarstva, sk	Museum of Caves, nz	Museum Hotel, tr
Cistern of Ancient Mycenae, gr	Jaskinia Mylna, pl	Mystery Cave, us
Mystic Caverns, us	Zeche Nachtigall, de	El Nacimiento, mx
Nagarjuna Caves, in	Nahehe Cave, fj	Naica Crystal Caves - Cueva de las Espadas - Cueva de los Cristales, mx
Naisese Caves, fj	Naj Tunich, gt	Nakimu Caves, ca
Tham Nam Bang, th	Goldbergwerk Name Gottes, de	Nanaimo Museum, ca
Nanaori shonyudo, jp	Nanatsugama shonyudo, jp	La Cité Souterraine de Naours, fr
Grotte de Napoléon, fr	Museo del Sottosuolo Napoletano, it	Napoli Sotterranea, it
Jeskyne Na Pomezi, cz	Narni Sotterranea, it	Narusawa Fuketsu, jp
Nashoba Brook Stone Chamber, us	Jeskyně Na Špičáku, cz	Gruta do Natal, pt
National Coal Mining Museum for England, gb	Národi Technické Muzeum, cz	Grotto of the Nativity, il
Natural Bridge Caverns, us	Natural Bridge Caverns, us	Caverns at Natural Bridge, us
Natural Stone Bridge and Caves, us	Natural Tunnel, us	Neanderthal, de
Nebelhöhle, de	Necromanteion of Ephyra, gr	Nederland Mining Museum, us
Needle's Eye, us	Neitsikoobas, ee	Nenthead Mines Heritage Centre, gb
Grottes de Neptune, be	La Cueva de Nerja, es	Nesmith Cave, us
Spílio tou Nestóros - Nestor's Cave, gr	Netherton Tunnel Branch Canal, gb	Nettle Cave, au
Grotte di Nettuno, it	Neubulach - Hella-Glück-Stollen, de	Musée des Mines de Fer de Neufchef, fr
Karstkundlicher Wanderweg Neuhaus/Pegnitz, de	Neustädtler Hobbybergwerk, de	Newdegate Cave, au
Newgrange, ie	New Hope Cave, us	New Mexico Mining Museum, us
Newnes Glow Worm Tunnel, au	Ngarua Caves, nz	Ngilgi Cave, au
Nguom Ngao Cave, vn	Nhi Thanh Cave, vn	Niagara Cave, us
Gua Niah, my	Niasar, ir	Grotte de Niaux, fr
Grottes de Nichet, fr	Nidlenloch, ch	Niedaltdorfer Tropfsteinhöhle, de
Jaskinia Niedźwiedzia, pl	Jaskinia Nietoperzowa, pl	Nigardsbreen Ice Cave, no
Nikau Cave, nz	Die historische Grotte in den Herrenhäuser Gärten, de	St Ninian's Cave, gb
Għar Ninu, mt	Nippara shonyudo, jp	Niter Ice Cave, us
Pigeonnier de la Niverdière, fr	Cave Nivida, pa	Nixhöhle, at
Nixseebecken, de	The No. 9 Mine & Museum, us	Nodong Cave, kr
Nohoch Nah Chich, mx	Nõiakaev, ee	Noirmont Command Bunker, gb
Nonsuch Caves, jm	Noravank, am	Gruvmuseet Norberg, se
Nordmarks museum, se	Grotte de la Noré, fr	North Glory Hole, au
North Head Tunnels, nz	Eisenerzgrube Nothweiler, de	The Caves of Nottingham, gb
Novoafonskaya, ge	Muzeum Gornictwa Podziemnego w Nowej Rudzie, pl	National Stone Centre, gb
Null Stern Hotel, ch	Grotta Nuova, it	Nutty Putty Cave, us
Amabera ga Nyinamwiru, ug	Grotte aux Nymphes, ch	Nyvångs kolgruva, se
Oberharzer Bergwerksmuseum, de	Gipsbergwerk Oberwiesen, ch	Historische Silbergruben Oberzeiring, at
Obir Tropfsteinhöhlen, at	WISMUT Objekt 90, de	Obodska Cave, me
Grotte de l'Observatoire, fr	Ochozská jeskynĕ, cz	Ochtinska Aragonitova Jaskyna, sk
Wasserbaum von Ockensen, de	Odaira shonyudo, jp	Odelsteinhöhle, at
Odessa Catacombs, ua	Odin Mine, gb	Öblarner Kupferweg, at
Bergbaumuseum Oelsnitz, de	Ötscher Tropfsteinhöhle, at	Ofnethöhlen, de
Ogba Ogbunike, ng	Ohio Caverns, us	Ohtake shonyudo, jp
Ohtaki shonyudo, jp	Uamh an Oir, gb	Oja de Agua, mx
Ojika-do, jp	Ojo de Agua, mx	Ojo Guareña, es
Ojukwu Bunker, ng	Caverna de la Olada, pe	Old Dominion Mine Park, us
Old Hundred Gold Mine Tour, us	Old New-Gate Prison & Copper Mine, us	Old Spanish Treasure Cave, us
Old Timers Mine, au	Old Water Wheel, au	O'Leno State Park, us
Olentangy Indian Caverns, us	Olgahöhle, de	Grotte di Oliero, it
Spilia Olimbi, gr	Olumo Rock, ng	Olympic Dam Mine, au
Gorges d'Ombleze, fr	Omuru Flying Fox Cave, pg	Onagara shonyudo, jp
Cueva de Oñati-Arrikrutz, es	Ondaldong Gul, kr	Onondaga Cave, us
Ontario Silver Mine, us	Onyx Cave at Guntown Mountain, us	Onyx Cave Park, us
Oparara Arch, nz	Podziemia Opatowskie w Opatowie, pl	Oppenheimer Kellerlabyrinth, de
Orakei Korako, nz	Gorges de l'Orbe, ch	L'Orbiere, fr
Oregon Caves, us	Organ Cave, us	Aven d'Orgnac, fr
Oribi Gorge, za	Jenolan Caves - Orient Cave, au	Orlovaca Cave, ba
Orlova Čuka, bg	Grottes de Ornolac, fr	Cueba de Oro, ph
Oroszlány Bányász Múzeum, hu	Orphan Girl Mine, us	La Grotta dell'Orso, ch
Orvieto, it	Museum Industriekultur Osnabrück, de	Senda del Oso, es
Osowka Complex, pl	Grotte d'Osselle, fr	Ossian's Cave, gb
Ossian's Cave, gb	Ossian's Cave, gb	Bergbau- und Industriemuseum Ostbayern, de
Osterhöhle, de	Hüttenstollen Osterwald, de	Ostrog Monastery, me
Oswaldhöhle, de	Otliško Okno, si	Otoska Jama, si
Grube Otto, de	Otto Photo Underground Photographic Gallery, au	Caverna Ouro Grosso, br
Le Musée de l'Ours de Cavernes, fr	Outlaw Cave Tours, us	Outokummun Kaivosmuseo, fi
Oven's Caves, ca	Owensboro Area Museum of Science and History, us	Oweynagolman Cave, ie
Grutas de Oxtotitlan, mx	Oylat Mağaraları, tr	Oyster Bar, us
Grand Central Oyster Bar, jp	Ozark Caverns, us	Özkonak Yeralti Şehri, tr
Ozluce Underground City, tr	Pac Bo Cave, vn	Gouffre de Padirac, fr
Gruta do Padre Caio, br	Paengnyong Cave, kr	Tham Pa Fa, la
Grotta Paglicci, it	Pahiyangala, lk	Painted Cave, us
Bois de Paiolïve, fr	Paisley Caves, us	Tham Pak Ou, la
Palabora Copper Mine, za	Palaha Cave, nu	Grotta Palazzese, it
Grotta di Pale, it	Palmaz Vineyards, us	Palm Jumeirah Underpass, ae
Grotta delle Palombe, it	Pálvölgyi Barlang, hu	Pamukkale, tr
Panagia Spiliani, gr	Panagia Spiliani, gr	Panama Rocks Scenic Park, us
Pandavleni Caves, in	Panhulugan Cave II, ph	Panhulugan Cave I, ph
Panias Spring, il	Papanikolís Cave, gr	Fromageries Papillon, fr
Paradana Ledenika Jama, si	Paradise Lost, ke	Paradise Pansiyon, tr
Parc de la Préhistoire, fr	Musée des Egouts de Paris, fr	Paris Ice Cave, us
Parkhöhle Weimar, de	Park City Silver Mine Tour, us	Parque de la Prehistoria, es
Partnachklamm, de	Bunkr Parukářka, cz	Minas de Passagem, br
Schneeberg Passeier, it	Grotta di Pastena, it	Pataleshwar Cave Temple, in
Caverne Patate, mu	Abri Pataud, fr	PATH, ca
Paulinenhöhle, at	Paviland Cave, gb	Pazinska jama, hr
Peacock Springs, us	Peak Cavern, gb	Peak Hill Open Cut Experience, au
Grotte de Pech Merle, fr	Casa de Pedra, br	Jama Pekel, si
Spilaio sta Pelekita - Sikias Spilios - Cave of Pelekita, gr	Pelion barlang, hu	Shpella e Pëllumbasit, al
Peniger Kellerberggänge, de	Penn's Cave, us	Peppersauce Cave, us
Spelaio Peramatos - Perama Cave, gr	A Visit of Perama Cave, gr	Musée d'Art et d'Archéologie du Périgord, fr
The Pernod Accident, fr	Grottes de Perrier, fr	Centre des Perrières, fr
Perrier-Jouët, fr	Perry's Cave, us	Schaubergwerk Pertisau, at
Grotta dell'Angelo, it	Peter's Cave, ky	La Petite Perrière, fr
Petnicka Pecina, rs	Petra Cave City, jo	Spilaio Petralona - Kókkines Pétres, gr
Petrov Plže, cz	Pecina kod Petrusa, rs	Les casemates de la Pétrusse, lu
Petty John's Cave, us	Pferdegöpel auf dem Rudolphschacht, de	Tham Pha Chom, th
Tham Pha Hong, th	Tham Pha Kouang, la	Tham Pha Thai, th
Tham Pha Thong, th	Tham Pha Tok, la	Phattalung - Phu Khao Ok Thalu, th
Tham Phayanak, th	Philipp's Cave, na	Les souterrains de Philippeville, be
Besucherbergwerk Philippstollen Olsberg, de	Phnom Slap Ta'aun Caves, kh	Phnom Sorsia Cave, kh
Phoenix Mine, us	Phong Nha Cave, vn	Wat Tham Phon Sawan, th
Tham Phra Nang, th	Tham Phra That, th	Tham Phra Wang Daeng, th
Tham Phraya Nakhon, th	Phugtal Gompa, in	Pictograph Cave, us
Pidurangala, lk	Chiesetta di Piedigrotta, it	Jaskinia Piekło, pl
Pierre et Lumière, fr	Maison de la Pierre de Volvic, fr	Pießling Ursprung, at
Cuevas del Pilar, es	Cueva de la Pileta - Pileta Cave, es	Pilog Mine, th
Cueva del Pindal, es	Pindaya Caves, mm	Pine Mountain Gold Museum, us
Pinnacles National Monument, us	Pinnacles, my	Cueva Pintada, es
La Cueva de las Pinturas, hn	Pioch Farrus Mine, fr	Buco del Piombio, it
Pioneer Coal Mine Tunnel, us	Piper Heidsieck, fr	La Cueva del Pirata, es