“Sharks Teeth” – Sand Dunes in Proctor Crater

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Caption:

Sometimes, pictures received from Mars Global Surveyor's Mars Orbiter Camera (MOC) are "just plain pretty." This image, taken in early September 2000, shows a group of sand dunes at the edge of a much larger field of dark-toned dunes in Proctor Crater. Located at 47.9°S, 330.4°W, in the 170 km (106 mile) diameter crater named for 19th Century British astronomer Richard A. Proctor (1837-1888), the dunes shown here are created by winds blowing largely from the east/northeast. A plethora of smaller, brighter ripples covers the substrate between the dunes. Sunlight illuminates them from the upper left.

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