NASA's Mars Global Surveyor shows pitted terrain northeast of Hellas Basin on Mars shows light-toned outcrops of layered, sedimentary rock, and a valley floor covered by large, dark ripples or small dunes.

MGS MOC Release No. MOC2-446, 8 August 2003

This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image of pitted terrain northeast of Hellas Basin shows light-toned outcrops of layered, sedimentary rock, and a valley floor covered by large, dark ripples or small dunes. Similar light-toned sedimentary materials are found throughout the region immediately northeast of Hellas, and in the crater, Terby. The area shown is 3 km (1.9 mi) wide and located near 27.5°S, 281.7°W. Sunlight illuminates the scene from the upper left.

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