Sarma Cave

Sarma Cave, located in the Gagra District of Abkhazia, a breakaway region of Georgia, is the third-deepest recorded cave in the world. Its depth was measured in 2012 by a team led by Pavel Rudko.
The cave was discovered in 1990 by caver Sergey Shipitsin during a research expedition of the Arabika caving club from Irkutsk, led by Alexander Osintsev.

Fauna

Two species of stygobiont amphipods have been found: Zenkevitchia sandroruffoi, living at depths of no more than -350 m and found in other caves of eastern Arabika Massif, in Troika Cave and in Eagle's Nest Cave ; and Adaugammarus pilosus, inhabiting aquatic biotopes in the deep part of the cave.