Caves of Europe

Caves of Slovenia

Wombeyan Caves (Australia)

Petar Caves (Brazil)

Mammoth Cave (USA)

World Cave database

Caves of Belgium

Indiana and Kentucky Caves (U.S.A.)

Movile Cave, Romania [1]

Movile Cave, Romania [2]

Piatra Altarului Cave - Romania

Caves of Norway

Swedish Caves

The Jamaica Caves

Caves of the Virginias

Le Grotte Vulcaniche della Sicilia

Digital Caves

Caves in gypsum in Sicily

Caves of Trentino Alto Adige


[background: Zinzulusa cave, Castro Marina, Lecce - Italy]