A few nice Land Rover sand images I found:
Mars: Gale Crater Rim Mountain
Image by PaulH51
This mid-afternoon view from the right-side Mast Camera (R-MastCam) on Curiosity rover features a section of the inner rim wall of Gale Crater. It was acquired during a period when there was little dust or haze in the atmosphere, so conditions were fairly good for long-distance imaging. JPL have been studying this particular section of the rim wall for several weeks comparing the differing lighting conditions.
The rover acquired this image during mission sol 1309, April 16, 2016, while the rover was conducting remote science in-between drives on the "Naukluft Plateau" on lower Mount Sharp, inside Gale Crater.
The tall peak of the crater wall featured in this image, is located at azimuth 357.2 degrees east of north (or 2.8 degrees from north), is about 17.6 miles (28.4 kilometers) away from the rover and rises about 3,900 feet (1,200 meters) above the base of its foothills.
(Details edited using more accurate information since provided by JPL)