This Dec. 18, 2015, view of the downwind face of "Namib Dune" on Mars covers 360 degrees, including a portion of Mount Sharp on the horizon. The component images were taken by the Mast Camera on NASA's Curiosity Mars rover. The site is part of the dark-sand "Bagnold Dunes" field of active dunes.
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Image Credit: NASA/JPL-Caltech