Putative Paleolake - Once in the ancient past, this might have been a lake. Studying minerals will help determine if any clays are present.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2016-01-05 11:27
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/24195361915/">ESP_012541_1600</a>