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.
* "Why Astrobiologists Love Don Juan Pond" (from Astrobiology Magazine, 2010): @
* Map: @