NASA's Mars Global Surveyor shows small barchan dunes on the floor of a crater in western Arabia Terra on Mars. Similar dunes are found in most of the larger craters of this region.

16 July 2005
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows small barchan dunes on the floor of a crater in western Arabia Terra. Similar dunes are found in most of the larger craters of the region. The steepest slopes on these dunes, their slipfaces, point toward the west-southwest, indicating that dominant winds blow from the east-northeast (upper right).

Location near: 10.9°N, 2.8°W
Image width: width: ~3 km (~1.9 mi)
Illumination from: lower left
Season: Northern Autumn

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