This color thumbnail image was obtained by NASA's Curiosity rover revealing surface features including relatively dark dunes, degraded impact craters and other geologic features including small escarpments.

This color thumbnail image was obtained by NASA's Curiosity rover during its descent to the surface of Mars on Aug. 5 PDT (Aug. 6 EDT). This image from Curiosity's Mars Descent Imager reveals surface features including relatively dark dunes, degraded impact craters and other geologic features including small escarpments that range in size from a few feet (meters) to many tens of feet (meters) in height.

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