<p>Spiders on Ejecta Blankets – These are not actual spiders, of course, but the term given to the shape of the darker, exposed subsurface material that results from sublimation, when a solid goes directly into a gaseous state.
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NASA/JPL/University of Arizona (Acquired: November 2016, approximately 250 kilometers above the surface. Scene is 5 km across. <a rel="nofollow" class="external text" href="http://www.uahirise.org/ESP_048451_1010">www.uahirise.org/ESP_048451_1010</a>)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2017-06-05 10:11
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/35160955715/">ESP_048451_1010</a>