The Blue Grotto in Capri, Italy
Cave of the Crystals in Chihuahua, Mexico
Krubera Cave in Abkhazia, Georgia
Fingal's Cave in Staffa, Scotland
Eisriesenwelt Ice Cave in Werfen, Austria
Puerto Princesa Subterranean River in Palawan, Philippines
Mammoth Cave National Park in Kentucky, USA
kocjan Cave in Divača, Slovenia
Carlsbad Caverns National Park in New Mexico, USA
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