 :not to be confused with vorontsov cave  krubera cave (; or voronya cave, sometimes spelled voronja cave) is the deepest known cave on earth. it is located in the arabika massif of the gagrinsky range of the western caucasus, in the gagra district of abkhazia, a breakaway region of georgia. the difference in the altitude of the cave's entrance and its deepest explored point is . it became the deepest-known cave in the world in 2001 when the expedition of the ukrainian speleological association reached a depth of  which exceeded the depth of the previous deepest known cave, lamprechtsofen, in the austrian alps, by 80&nbsp;m. in 2004, for the first time in the history of speleology, the ukrainian speleological association expedition reached a depth greater than 2,000&nbsp;m, and explored the cave to . ukrainian diver gennadiy samokhin extended the cave by diving in the terminal sump to 46&nbsp;m depth in 2007 and then to 52&nbsp;m in 2012, setting successive world records of 2,191&nbsp;m and 2,197&nbsp;m respectively. krubera remains the only known cave on earth deeper than 2,000&nbsp;metres. == naming == "voronya cave" means "crows' cave" in russian. this name was used as a slang name by kiev speleologists during the 1980s due to a number of crows nesting in the entrance pit, and then remained in the literature and media as a second name for the cave. the original name "krubera" had been assigned to the cave by
Caves_of_Abkhazia Caves_of_Georgia_(country) Gagra_District Limestone_caves Wild_caves