NASA's Mars Global Surveyor shows a field of dark, windblown sand dunes in the Noachis Terra region of Mars.

5 September 2004
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a field of dark, windblown sand dunes in the Noachis Terra region near 45.2°S, 321.4°W. The image covers an area approximately 3 km (1.9 mi) across. Sunlight illuminates this scene from the upper left.

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