Barchan dunes of dark sand in the
Nili Patera region of Syrtis Major, Mars. The shapes of these dunes
indicate that wind has been steadily transporting the dark sand from the
right/upper right toward the lower left. This picture was taken on the
first day of the MGS Mapping Phase during the second week of March 1999.
It shows an area 2.1 kilometers wide at the full commanded
resolution of 3 meters per pixel. Illumination is from the upper left.
Photo Credit: NASA/JPL/Malin Space Science Systems.