The little country of Albania was recently discovered to be harboring a giant secret: the largest geothermally-heated underground lake in the world.

Discovered in 2021 by Czech scientists, geopolitical troubles on the border region with Greece saw them depart before a proper investigation of the cave could be made.

What they did find though was a massive column of steam rising out of the hills in an area around the town of Leskovik. Approaching it, they encountered a massive abyss descending 330 feet (100 meters) under the Earth. Exploring down, they found this massive lake of turquoise water that was geothermally heated.