<p>Tell-Tale Bedrock in Tyrrhena Terra — Geologists study the central peaks of craters because the uplifted bedrock was once deep within the Martian crust.
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NASA/JPL/University of Arizona
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/71688597@N05">UAHiRISE (NASA)</a>
2018-09-14 16:40
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