Mars dunes from MRO
Mars dunes from MRO The High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA's Mars Reconnaissance Orbiter captured these sand ripples and the large dune (at center) on Feb. 9, 2009. Color has been added to make textures easier to see. This area is in Proctor Crater at 47.8 degrees south latitude and 30.7 degrees east longitude. NASA/JPL-Caltech/University of Arizona

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