The green heart of Italy, in the center of the country, and of the Apennines. The highest peak of Umbria is Mt. Vettore on the border to the Marche which is 2476 m asl. It is famous since Antiquity as a beautiful and fertile region, still it is today rather rural and has a population of less than 100/km². Its most famous son is San Francesco d’Assisi, the founder of the Fransiscan monk order.
This part of the country is dominated by volcanic geology. There are huge volcano field, often forming chains of circular lakes. There are hot springs and mineral water springs. The soft tufa of the volcanic eruptions was used for building artificial caves all over the area. Most important are the caves of Orvieto.
 Museo del Capitolo di San Lorenzo
Museo del Capitolo di San Lorenzo Cisterne Romane Amelia
Cisterne Romane Amelia Cripta duomo Città di Castello
Cripta duomo Città di Castello Grotta di Monte Cucco
Grotta di Monte Cucco Museo delle Miniere di Morgnano
Museo delle Miniere di Morgnano Narni Sotterranea
Narni Sotterranea Orvieto Underground
Orvieto Underground Grotta di Pale
Grotta di Pale Minimetrò Perugia
Minimetrò Perugia Pozzo della Cava
Pozzo della Cava Rocca Paolina
Rocca Paolina Grotta San Francesco
Grotta San Francesco Speco di San Francesco
Speco di San Francesco Todi Sotterranea
Todi Sotterranea