Image Credit: NASA/JPL/ASU

Context image credit: NASA/JPL/MOLA
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Located not far south of Olympus Mons, these mesas show interesting erosional patterns. Some of their slopes, particularly those on the eastern-facing sides, show a debris with a blocky and somewhat etched appearance. In the bottom half of the image, where the mesas become more common, small bright mega-ripples (a dune form) snake between the mesas. Perhaps they are formed from locally-derived materials eroding off the mesa slopes.