<p>Spiders on Mounds: 
This landform is uniquely Martian, formed in the spring as seasonal dry ice turns directly into gas.
</p>
NASA/JPL/University of Arizona (5 km across; <a rel="nofollow" class="external text" href="http://www.uahirise.org/ESP_046562_1005">www.uahirise.org/ESP_046562_1005</a>)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2016-12-15 20:53
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/30982033833/">ESP_046562_1005</a>