25 December 2003
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows gullies carved into a slope in southern Galle Crater, east of Argyre Planitia. These may have been carved by a liquid such as water. The slopes are part of the inner ring of rocky mountains uplifted by the asteroid or comet impact that formed Galle Crater. The crater is extremely ancient; the gullies are much more recent landforms. The picture is located near 51.8°S, 31.2°W, and covers an area 3 km (1.9 mi) wide. Sunlight illuminates the scene from the upper left.