This Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC) image shows a portion of a field of dark sand dunes superposed on the light-toned floor of a crater in eastern Tyrrhena Terra. The orientation of the dunesâ€”with the steep faces toward the south (bottom)â€”suggests that winds generally blew from north to south at the time the dunes were formed.
Location near: 14.6Â°S, 262.3Â°W
Image width: ~3 km (~1.9 mi)
Illumination from: lower left
Season: Southern Summer