This image from NASA Mars Reconnaissance Orbiter shows dunes on the floor of Herschel Crater. Steep faces lipfaces are oriented downwind, in the direction of motion of the dunes. A dune-free area downwind of the crater is seen at the image center.
This image from NASA Mars Reconnaissance Orbiter shows dunes on the floor of Herschel Crater. Steep faces lipfaces are oriented downwind, in the direction of motion of the dunes. A dune-free area downwind of the crater is seen at the image center.