These mountains in Albania kept this giant underground lake hidden for centuries; now it’s the world’s largest underground thermal lake | World News
For years, people living near the Albanian-Greek border had little reason to suspect that an immense body of warm water lay concealed beneath the mountains around them. The landscape gave away only small hints. Steam drifted from fissures in the limestone. Mineral springs surfaced in scattered locations. Beneath those signs, though, an entirely separate world…
