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Sandy Dunes

Sept. 14, 2006
This image from NASA's Mars Global Surveyor shows dark sand dunes, with a thin coating of autumn frost, in the Ogygis Regio west of Argyre basin.

14 September 2006
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows dark sand dunes, with a thin coating of autumn frost, in the Ogygis Regio west of Argyre basin. The steepest slopes on the dunes, their slip faces, point toward the north-northeast (upper right), indicating that the dominant winds in the region blow from the south-southwest (lower left).

Location near: 50.4°S, 66.6°W
Image width: ~3 km (~1.9 mi)
Illumination from: upper left
Season: Southern Autumn

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