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Last updated on April 21, 2014 at 7:52 EDT
Granicus Valles
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Granicus Valles

January 15, 2004
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows some of the troughs of the Granicus Valles system, located west of the Elysium volcanic rise near 27.1°N, 224.0°W. The floors exhibit abundant large ripple-like features deposited and shaped by wind. The dark dots on the valley floors are large boulders. The image covers an area approximately 3 km (1.9 mi) wide; sunlight illuminates the scene from the left.