A high mesa in the Ganges Chasma region of  Mars casts long shadows in the evening sunlight.

Actually part of a larger mesa structure rising out of the chasm, itself part of the giant Mariner Valley that slices across Mars, this marbled plateau (seen in contrast-enhancing false color) was photographed by the HiRISE camera aboard the Mars Reconnaissance Orbiter (MRO) on January 20.

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Image credit: NASA/JPL/University of Arizona