<p>Rock Sheet, Meet Sand Sheet — This stretch of Coprates Chasma is highly unusual from an aeolian (wind-blown) perspective. This arrangement of a sand sheet being upwind of dunes, while very normal for Earth, is a very rare occurrence on Mars.
</p><p>NASA/JPL/University of Arizona (263 km above the surface, less than 5 km across)
</p><p>Source: <a rel="nofollow" class="external text" href="https://www.uahirise.org/ESP_052579_1660">www.uahirise.org/ESP_052579_1660</a>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2018-07-30 11:05
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/43695552282/">ESP_052579_1660</a>