Canyons Craters Polar Ice Caps Water Features Volcanoes Martian Terrain Dust Storms Sand Dunes Videos Return to Sand Dunes index. This dramatic image shows a field of dark sand dunes in the Nili Patera region of Syrtis Major. This picture was taken on the first day of the MGS Mapping Phase during the second week of March 1999.
Illumination is from the upper left.