Clearwell
United Kingdom
Cueva de Saturno
Cuba
20 m deep
Cueva del Diablo
Bolivia
Dersios sinkhole
Greece
170 m deep
Devil's Lair
Australia
Devils Well
Diu Diu Cave
Papua New Guinea
Doxa
Greece
Dragon Cave
Eagle Cave
United States
Escoural Cave
Portugal
Exit Cave
Australia
Fintan's Grave
Fox Cave
United States
Furnia de Catanamatias
Dominican Republic
380 m deep
Goetz Cave
Germany
Gourgouthakas
Greece
1129 m deep
Gouy Cave
Grotta Paglicci (Paglicci Cave)
Italy
Gruta das Cinco RibeirasCave of Cinco Ribeiras
Portugal
Gruta do Centenário
Brazil
481 m deep
Hidden Cave
United States
Hillier's Cave
United Kingdom
Hunugalagala Limestone Cave
Sri Lanka
Hutchinson’s Hole
Jamaica
98 m deep
Indian Caverns
Inner Space Cavern
Inner Space Caverns
Klasies River Caves
South Africa
Koonalda Cave
Australia
Kyrnychky
Ukraine
Lamb Leer
United Kingdom
Longgu Cave
Luobi Cave
China
Macaque Cave
China