<p>Pits and Channels of Hebrus Valles – Pits such as these are of interest as possible candidate landing sites for human exploration because they might retain subsurface water ice.
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NASA/JPL/University of Arizona (less than 5 km across; <a rel="nofollow" class="external text" href="http://www.uahirise.org/ESP_048036_2025">www.uahirise.org/ESP_048036_2025</a>)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2017-01-26 11:10
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/32417263991/">ESP_048036_2025</a>