PIA08580: Gullies and Dunes
NASA's Mars Global Surveyor shows gullies overlain by seasonal frost in the north wall of an unnamed crater west of Hellas Planitia on Mars.
 Target Name:  Mars
 Is a satellite of:  Sol (our sun)
 Mission:  Mars Global Surveyor (MGS) 
 Spacecraft:  Mars Global Surveyor Orbiter
 Instrument:  Mars Orbiter Camera (MOC) 
 Product Size:  836 x 1887 pixels (w x h) 
 Produced By:  Malin Space Science Systems 
 Producer ID:  MOC2-1516  
 Full-Res TIFF:  PIA08580.tif (1.579 MB)
 Full-Res JPEG:  PIA08580.jpg (166.4 kB)  

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Original Caption Released with Image:

7 July 2006
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows gullies overlain by seasonal frost in the north wall of an unnamed crater west of Hellas Planitia. The gullies likely formed by a combination of mass movement (i.e., landsliding) and fluid flow (i.e., water-rich debris flows). Below (south of) the gullies is a field of sand dunes; they, too, are covered by seasonal frost.

Location near: 47.4°S, 322.8°W
Image width: ~3 km (~1.9 mi)
Illumination from: upper left
Season: Southern Winter

Image Credit:
NASA/JPL/Malin Space Science Systems

Image Addition Date:
2006-07-07