NASA's Mars Global Surveyor shows dark, windblown sand dunes in a crater in the Hesperia region of Mars.

30 June 2005
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows dark, windblown sand dunes in a crater in the Hesperia region of Mars. The steepest slopes on the dunes -- their slipfaces -- point toward the south-southwest, indicating that the winds responsible for the dunes blew from the north-northeast (top/upper right).

Location near: 12.4°S, 236.5°W
Image width: ~3 km (~1.9 mi)
Illumination from: upper left
Season Southern Spring

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