NASA's Mars Global Surveyor shows layers exposed in the walls of a crater-like form in the south polar region of Mars.

28 March 2004
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows layers exposed in the walls of a crater-like form (only partially seen here) in the south polar region. These layers record some of the history of the martian south pole, although deciphering this record will require human or robotic explorers to get a closer view. The layered outcrop is located near 84.6°S, 359.6°W. The image covers an area about 3 km (1.9 mi) across. Sunlight illuminates the scene from the upper left.

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