The Biggest Speleothems of the World


This is definitely not a ranking. It is just a list of extraordinary big speleothems of various kinds. Most of them are located in wild caves which are not open to the public, so they are not listed on showcaves.com.


Type Size Cave Location Explanation Picture
Explainsoda straw 9.13 m Wonder Cave Gunung Mulu, Malaysia Longest single soda straw
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Explainsoda straw 9.03 m Unnamed Cave Mexico Longest soda straw group, several straws over 8 m in the group
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Speleothemrimstone pools 22 m Actun Kotob Belize Tallest rimstone dam
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Speleothemrimstone pools 61 m ShowcaveTham Xe Bang Fai Laos Longest rimstone dam
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Speleothemrimstone pools L=610 m, H=20 m CaveWadi Sannur Cave Egypt Longest single rimstone dam formed on the surface. Wadi Sannur is a rare type of cave formed by roofing over of a giant surface rimstone dam at its spillover point. The rimstone dam was formed by a large thermal spring.
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Speleothemrimstone pools 400 m ShowcaveTinazTepe Mağarları Turkey Longest connected rimstone pool series
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Speleothemcave formation 150 m CaveLechuguilla Cave New Mexico, U.S.A. Flowstone cascade with greatest vertical extent, Neverland to Dead Sea
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Speleothemcave formation 17,700 m CaveFort Stanton Cave New Mexico, U.S.A. Longest continuous formation, white calcite crust in a stream channel named Snowy River Passage
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Speleothemgypsum 1.98 m Double Bopper Cave Arizona, U.S.A. Longest gypsum flower petal (supported)
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Speleothemgypsum 11 m CaveCave of Swords Mexico Longest selenite crystal
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SpeleothemCave Pearl 290 m² CaveGruta de las Canicas Mexico Some 200 million cave pearls cover the cave floor to a depth of more than a meter on 290 m², which makes this the biggest deposit of cave pearls.
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