This image taken by NASA Mars Reconnaissance Orbiter shows Samara Valles, one of the longest ancient valley systems on Mars; its surface is mantled with dust as evidenced by the system of dunes that line the valley floor.
Details
Title: Dunes on Floor of Samara Valles, Mars
Creator: NASA/JPL-Caltech/University of Arizona
Date Created: 2010-03-31
Rights: JPL
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