Boybuloq Cave
The cave is the deepest known cave in Asia having been explored to a depth of from the entrance. At the lowest discovered level a water-filled siphon blocks further exploration. It is thought that the cave has the potential to be the deepest known cave in the world, with a theorised depth of making it deeper than the Veryovkina Cave. The explored length of the cave is .
Krubera Cave
The biocenosis of Krubera-Voronja is composed of more than 12 species of arthropods of several groups, such as pseudoscorpions, spiders, opiliones, crustaceans, springtails, beetles and dipterans. Krubera-Voronja cave is inhabited by endemic species, including four springtails discovered during the CAVEX Team expedition of 2010: "Anurida stereoodorata", "Deuteraphorura kruberaensis", " Schaefferia profundissima", and "Plutomurus ortobalaganensis"; the last of these is the deepest terrestrial animal ever found on Earth, living below the cave entrance. The beetle "Catops cavicis" inhabits Krubera-Voronja cave and also several caves around the Ortobalagan valley. The subterranean amphipod crustacean "Kruberia abchasica" caught by Gennady Samokhin in August 2013, during dives in the siphon 'Dva Kapitana', dwells at the deepest part of the Krubera Cave (at the depth of -2,175 metres).