Victoria Crater, an
impact crater at
Meridiani Planum, near the equator of
Mars. The crater is approximately 800 meters (half a mile) in
diameter. It has a distinctive scalloped shape to its rim, caused by
erosion and downhill movement of crater wall material. Layered
sedimentary rocks are exposed along the inner wall of the crater, and boulders that have fallen from the crater wall are visible on the crater floor. The floor of the crater is occupied by a striking field of sand
dunes. The Mars rover
Opportunity can be seen in this image, at roughly the "ten o'clock" position along the rim of the crater.
Photo credit: Mars Reconnaissance Orbiter