PIA06413: Gully in the North
NASA's Mars Global Surveyor shows a gully formed in the wall of a north middle-latitude crater. Similar gullies are common at the middle and polar latitudes of Mars, and might have formed by the action of liquid water.
 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 2351 pixels (w x h) 
 Produced By:  Malin Space Science Systems 
 Producer ID:  MOC2-1234  
 Full-Res TIFF:  PIA06413.tif (1.968 MB)
 Full-Res JPEG:  PIA06413.jpg (216.2 kB)  

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Original Caption Released with Image:

28 September 2005
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a gully formed in the wall of a north middle-latitude crater. Similar gullies are common at the middle and polar latitudes of Mars, and might have formed by the action of liquid water. Others have argued for carbon dioxide or dry mass movement for the genesis of such landforms. This particular image was acquired during northern autumn, when the sky over the terrain of the martian northern mid-latitudes is typically hazy.

Location near: 50.0°N, 356.9°W
Image width: width: ~3 km (~1.9 mi)
Illumination from: lower left
Season: Northern Autumn

Image Credit:
NASA/JPL/Malin Space Science Systems

Image Addition Date:
2005-09-28