Sarma cave

Sarma Cave (), located in Gagra District, Abkhazia, Georgia, is the third deepest recorded cave in the world. Its current depth (1830 m) was measured in 2012 by a team led by Pavel Rudko.
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 (at -30 m) and in Eagle's Nest Cave (-75 m), and "Adaugammarus pilosus" inhabiting aquatic biotopes in the deep part of the cave (elevations -1270 m and -1700 m).