<p>A Possible Alluvial Fan: Fan-shaped lobes likes these are also in the desert southwest of the United States, and are called "alluvial fans."
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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>
2016-02-09 10:46
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