QUICK FACTS
Name: Don Juan Pond
Location: McMurdo Dry Valleys, Antarctica
Coordinates: -77.5625, 161.1915
Why it's incredible: The lake's high salinity keeps it from freezing even in subzero temperatures.
Don Juan Pond is a lake in Antarctica's extremely cold McMurdo Dry Valleys region that has a salinity above 40%, making it one of the saltiest bodies of water on Earth. The pond contains so much salt, it has a syrupy consistency that never freezes, even though temperatures in the Dry Valleys often fall to minus 58 degrees Fahrenheit (minus 50 degrees Celsius).
