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Last updated on April 16, 2014 at 6:04 EDT
Nilosyrtis Impact Crater
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Nilosyrtis Impact Crater

February 12, 2013
This impact crater in the Nilosyrtis region of Mars contains numerous layers exposed along its floor. These layers formed long after the impact event and are likely deposits of dust and ice.

Also present are dunes of dark sand that probably blew in from the surrounding terrain.

Written by: Chris Okubo

Credits: NASA/JPL/University of Arizona