This article relies largely or entirely on a single source. (June 2015)
The largest non-subglacial lake in the world is in Dragon's Breath Cave in Namibia, with an area of almost 2 hectares (5 acres), and the second largest is in Craighead Caverns in Tennessee, United States.
- Kelly, Daniel (24 January 2014). "Dragon's Breath Cave Holds the World's Largest Underground Lake". Lake Scientist. Archived from the original on 31 May 2016. Retrieved 31 May 2016.
- "Dragon's Breath, Namibia". National Geographic. Retrieved 28 August 2012.
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