Sol 4857, September 22, 2017. Sunlight and shadow play on a patch of ground, as seen by the Microscopic Imager (above). The large pebble is dubbed Bernalillo. (The present target naming system honors places along the Camino Real de Tierra Adentro, the 16th-century Spanish royal road between Mexico City and Taos, New Mexico.)
At right is a Hazcam view showing the overall scene. Click either image to enlarge it.