Description
21 May 2006
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows sand dunes overlain by a layer of seasonal carbon dioxide frost in the north polar region of Mars. Sunlight illuminates the scene from the lower left, but slopes facing toward the upper right seem illuminated because of the thicker accumulation of frost on the slopes facing away from the sunlight.
Location near: 76.3°N, 264.3°W
Image width: ~3 km (~1.9 mi)
Illumination from: lower left
Season: Northern Winter
