<p>Rectangles with Wiggly Sides – Ground that has a lot of water ice mixed with dirt tends to crack in polygonal patterns bounded by short straight channels.
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NASA/JPL/University of Arizona (less than 1 km across; <a rel="nofollow" class="external text" href="http://www.uahirise.org/ESP_048124_0975">www.uahirise.org/ESP_048124_0975</a>)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2017-01-27 13:39
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/32517521556/">ESP_048124_0975</a>