Manage updates with the Download AppThawing Richardson Crater dunes
8 of 12 from Scenes from a dry-ice winter on Mars (pictures)
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In fall and winter, frost coats the dunes inside 34 mile-diameter Richardson Crater in the south polar region of Mars. Dark streaks and spots are the exposed sand in areas that are beginning to thaw.
January 26, 2013 9:00 AM PST
Photo by: NASA/JPL-Caltech/Univ. of Arizona
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