<p>A Section of Sirenum Fossae with Possible Clay-Rich Terrain — Sirenum Fossae is a long trough, about 2,735 km. 
</p><p>NASA/JPL/University of Arizona (257 km above the surface and north is to the left.) 
</p>
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<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2018-03-22 09:53
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