<p>Ridges in Meridiani Planum — 
These ridges are concentric around an impact crater (not visible in this image.)
</p>
NASA/JPL/University of Arizona. (Acquired: Feb 2017, approximately 308 kilometers above the surface, less than 1 km top to bottom and North is to the left. <a rel="nofollow" class="external text" href="https://www.uahirise.org/ESP_049557_1835">www.uahirise.org/ESP_049557_1835</a>)
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2017-08-14 11:54
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/uahirise-mars/35825643853/">ESP_049557_1835</a>