File:Rabe Crater.jpg
One puzzling question is why the dunes are dark compared with the relative bright layered material contained within the crater. The probable answer is that the source of the dark sand is not local to this crater; rather, this topographic depression has acted as a sand trap that has collected material being transported by winds blowing across the plains outside the crater.
Local Mars time: 2:22 PM. Latitude (centered): -43.5°. Longitude (East): 35.0°. Range to target site: 253.3 km. Original image scale range: 25.3 cm/pixel (with 1 x 1 binning) so objects ~76 cm across are resolved. Map projected scale: 25 cm/pixel and north is up. Map projection: EQUIRECTANGULAR. Emission angle: 1.9°. Phase angle: 43.3°. Solar incidence angle: 42°, with the Sun about 48° above the horizon . Solar longitude: 322.6°, northern winter.