There's a lake that's actually a giant sinkhole - Apparently.
Lake Van, located in eastern Turkey, is a deep, freshwater lake that's actually a massive sinkhole formed by the collapse of a cave system. With a maximum depth of approximately 451 meters (1,480 feet), it's one of the deepest lakes in the world. Geologists believe that the lake was created around 15,000 years ago when a massive underground cavern collapsed, leaving behind a massive depression that filled with water. This natural wonder is a fascinating example of the geological forces that shape our planet.