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Polar Features

NASA's Mars Global Surveyor shows a frost-covered surface in Mars' south polar region. The substrate beneath the frost is cracked, and seasonal frost surrounding each crack has begun to sublime away.
PIA03649
Credits: NASA/JPL/Malin Space Science Systems
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Description

17 December 2005
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a frost-covered surface in the south polar region. The substrate beneath the frost is cracked, and seasonal frost surrounding each crack has begun to sublime away, creating a distinct pattern of dark streaks in this September 2005 scene.

Location near: 85.3°S, 288.4°W
Image width: width: ~3 km (~1.9 mi)
Illumination from: upper left
Season: Southern Summer