Underground lake

An underground lake or subterranean lake is a lake under the surface of the Earth. Such lakes may be associated with caves, aquifers, or springs. They are typically very low in salinity.

The largest non-subglacial lake in the world is in Dragon's Breath Cave in Namibia,[1] with an area of almost 2 hectares (5 acres),[2] and the second largest is in Craighead Caverns in Tennessee, United States.

See also


  1. Kelly, Daniel (24 January 2014). "Dragon's Breath Cave Holds the World's Largest Underground Lake". Lake Scientist. Archived from the original on 1 March 2015. Retrieved 31 May 2016.
  2. "Dragon's Breath, Namibia". National Geographic. Retrieved 28 August 2012.

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