NASA's Mars Global Surveyor shows light-toned, somewhat layered rock outcrops on the north wall of Columbus Crater on Mars. Remnants are found all around the walls of the crater, and at least one small remnant has been spotted on the crater floor.

25 April 2004
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows light-toned, somewhat layered rock outcrops on the north wall of Columbus Crater, located near 28.7°S, 166.3°W. This material is a remnant of a formerly more extensive light-toned unit that extended across the floor of Columbus. Today, remnants are found all around the walls of the crater, and at least one small remnant has been spotted on the crater floor. The picture covers an area about 3 km (1.9 mi) across. Sunlight illuminates the scene from the upper left.

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