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Nilosyrtis Dunes
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Nilosyrtis Dunes

July 31, 2013
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a rare patch of dark sand dunes in the Nilosyrtis Mensae region of Mars. The steepest slopes on these dunes, their slipfaces, point toward the south-southwest, indicating that the dominant winds that formed them came from the north-northeast (top/upper right). MGS MOC Release No. MOC2-1169, 31 July 2005

Credits: NASA/JPL/Malin Space Science Systems