NASA's Mars Global Surveyor shows deep gullies cut into the wall of a south mid-latitude crater on Mars. Erosion has exposed layers in the upper wall of the crater.

19 November 2005
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows deep gullies cut into the wall of a south mid-latitude crater. Erosion has exposed layers in the upper wall of the crater; it is possible that groundwater seeping through a layer or layers in the wall led to the genesis of the gullies. The banked nature of the gully channels suggests that a liquid was involved.

Location near: 35.5°S, 194.8°W
Image width: width: ~2 km (~1.2 mi)
Illumination from: upper left
Season: Southern Spring

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