Where the Wind Blows

The lower elevation on the left side of this VIS image is part of Memnonia Sucli. The higher elevations to the right are on the upper part of a mesa that bounds the sulci. The image shows some of the extensive wind etched terrain in Memnonia Sulci, located south west of Olympus Mons. The linear ridges are called yardangs and form by wind removal of semi-cemented material. The ridges are parallel to wind direction, so the predominate winds that created the yardangs in this image blew NE/SW.