Just thinking about the process of making my way down this map both scared me and filled me with wonder. I would love the chance to dive this cave. At least virtually.
At 2,197 meters (7,208 feet) the Krubera cave is the deepest on Earth. Located in the Arabika Massif, of the Western Caucasus in Abkhazia, Georgia, it extends for 13,432 kilometers (8,346 miles.)
Here’s the wiki page for the Krubera cave.