Wednesday, October 11, 1961: Don Juan Pond

During an aerial survey of southern Antarctica, an improbable natural feature is sighted: a small lake. It is named Don Juan Pond after the U.S. Navy helicopter pilots who carried the researchers. With a salinity level of 40% (18 times saltier than seawater), the shallow lake is thought to hold the saltiest water on the planet, and as such does not freeze. The pond is fed by melting glaciers; evaporation increases the salinity.

* Entry from The Encyclopedia of Earth: @
* Entry from www.geographic.org: @
* "Why Astrobiologists Love Don Juan Pond" (from Astrobiology Magazine, 2010): @
* Map: @
* Satellite photos: @ and @

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