<p>Rough Textured Crater Floor — In other images with lower resolution, the floor of this crater looks smooth, but we can see it’s very rough. 
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NASA/JPL/University of Arizona (251 km above the surface) <a rel="nofollow" class="external text" href="https://www.uahirise.org/PSP_005859_1340">www.uahirise.org/PSP_005859_1340</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/38683006845/">PSP_005859_1340</a>