NASA's Mars Global Surveyor shows dark teardrop-shaped sand dunes in eastern Copernicus Crater on Mars.

22 December 2005
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows dark teardrop-shaped sand dunes in eastern Copernicus Crater. The winds responsible for these dunes generally blow from the south-southwest (lower left).

Location near: 48.7°S, 167.4°W
Image width: ~3 km (~1.9 mi)
Illumination from: upper left
Season: Southern Summer

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