Marble Cave
The 67th longest cave in the world
1.3km · Length
The Marble Cave or the Gadime Cave (Albanian: Shpella e Mermerit, /Mermerna pećina) is a karstic limestone cave in the village of Gadime e Ulët in the municipality of Lipjan in Kosovo. Much of it is still unexplored. The cave was found in 1966 by a villager, Ahmet Asllani, who was working on his garden.
Cave data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).