Naica Crystals Caves (Mexico)
Cacahuamilpa Grotto (Mexico)
The Blue Lake Cave (Brazil)
Crystal Caves (Island of Bermuda)
Enchanted Well (Brazil)
Caves of Mira D’aire (Portugal)
Grotto of the Marvels (Spain)
Jeita Grotto (Lebanon)
Mogao Grottoes (China)
The Bellamar Cave (Cuba)
