<p>On the Migration of Ripples in Hellas Planitia —  This is part of a large dune field inside the western rim of Hellas Planitia. The field is located at an elevation that is deeper than most dune fields at this latitude. How does that impact ripple migration?
</p><p>NASA/JPL/University of Arizona
(258 km above the surface, less than 1 km top to bottom and north is to the right.)
</p>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2018-06-13 14:02
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