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Last updated on April 17, 2014 at 14:37 EDT
Wind-Eroded Terrain
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Wind-Eroded Terrain

December 9, 2003
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows wind-eroded material, possibly sedimentary rock, among the ridges of the Lycus Sulci region west of Olympus Mons. The darker surfaces and the dark-toned ripples on those surfaces indicate there may be windblown sand present in these areas. This October 2003 picture is located near 17.8°N, 143.7°W. The image covers an area approximately 3 km (1.9 mi) wide and is illuminated from the lower left.