NASA's Mars rover Curiosity used the Navigation Camera (Navcam) on its mast to record this westward look on the 347th Martian day, or sol, of the rover's work on Mars (July 28, 2013). The rover had completed a southwestward drive of 60.1 meters on that sol.
The prominent rock in the right foreground, informally named "East Bull Rock," is about 20 inches (half a meter) high. The rock-studded local rise dominating the image is called "Elsie Mountain." A distant portion of the rim of Gale Crater is visible in the upper portion of the view.
Photo credit: NASA/JPL-Caltech