Well-Preserved Impact Crater with Ridges
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Well-Preserved Impact Crater with Ridges

July 14, 2012
Although the rim of this well-preserved crater and its smooth walls are very impressive, note also the spectacular collection of ridges draping the underlying topography on the floor of this crater.

What can account for the formation of the terrain at the crater floor? One possible reason might the former icy flows at this latitude. High resolution images like this can give us better insight into features like this.

Credits: NASA/JPL/University of Arizona

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