<p>The Land of Sublimation. Sublimation is a process of a solid transforming directly to a gas state, so darker material gets exposed as a result.
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Image: NASA/JPL/University of Arizona
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2016-02-08 14:26
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/24275949793/">ESP_012075_1015</a>