Death Valley, California, is a harsh place. Even during this late September afternoon, it was exceptionally hot: about 110 F (43 C). I liked this telephoto view of Mesquite Sand Dunes - in particular, the shadow formed by ridge between two of the dunes' peaks.
(September 25, 2014. Nikon D5000, 1/100s @ f/18, 300mm, ISO 200.)