Update :- Voronya Cave, Krubera, Georgia : Deepest Cave on the Earth The Voronya Cave (aka Krubera-Voronia Cave) is the deepest known cave in the world. It is located in the Arabika Massif, West Caucasus, Abkhazia (a region of Georgia in the former Soviet Union). The height difference in the cave is 2,140 (± 9) metres.