<p>A Fan of Sand Dunes — Dunes are sensitive to subtle shifts in wind circulation patterns and wind strengths, much to our delight and fascination.
</p><p>NASA/JPL/University of Arizona (256 km above the suface.) 
</p>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2018-03-21 09:54
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