Salt Flats, Death Valley CA
By Geology and Ecology of National Parks
June 2011 (approx.)

Detailed Description
The aric climate of the Death Valley produces the renouned salt flats. Note the interesting hexagonal structure of the salt beds. This is a common form in nature, often associated in drying (mud cracks, salt flats) and cooling (columnar basalt) events.
Sources/Usage
Public Domain.