The Grotta dello Smeraldo (Italian for 'Emerald Grotto') is a sea cave
The Balve Cave (German: Balver Höhle) is the biggest cultural cave in
The Speedwell Cavern is one of the four show caves in Castleton,
The Blue John Cavern is one of the four show caves in Castleton,
Carter Caves State Resort Park is located in Carter County, Kentucky,
De Grotta di Nettuno (Nederlands: Grotten van Neptunus) zijn
De Siloamtunnel (נִקְבַּת השילוח, Nikbat HaShiloah), ook wel de Hizkia
Demänovská Cave of Liberty (Slovak: Demänovská jaskyňa Slobody) is a
De Sea Lion Caves zijn een stelsel van grotten die in een open
The silver mines of Kongsberg, in Buskerud county in Norway,
The Great Siege Tunnels in the British Overseas Territory of
The Cave Bath is a thermal bath in a natural cave in Miskolctapolca,
Ochtinská aragonitová jaskyňa is een grot die onderdeel uitmaakt va
Grjótagjá is a small lava cave near lake Mývatn with a thermal sp
Endless Caverns is a commercial show cave located 3 miles south of New
De Batsjo Kirogrot (Bulgaars: Бачо Киро пещера), vernoemd naar
El Soplao is a cave located in the municipalities of Rionansa,
The Pindaya Caves (Burmese:
Пече́ра «Змії́на» — найбільша карстова порожнина Внутріш
Cueva del Viento-Sobrado (Wind Cave) underground complex is the