NASA's Mars Global Surveyor shows a rounded knob in the Propontis region of Mars. Dark dots on the hilltop and slopes are house-sized (and larger) boulders.

22 April 2004
This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) picture shows a rounded knob in the Propontis region of Mars near 43.1°N, 182.3°W. Dark dots on the hilltop and slopes are house-sized (and larger) boulders. The picture covers an area about 3 km (1.9 mi) across. Sunlight illuminates the scene from the lower left.

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