These are tracks left by the Curiosity rover as it completed its first test drive on Mars on 22 August. The rover went forward about 4.5 m, rotated 120 degrees, and then backed up about 2.5 m. The rover is now roughly 6 m from its landing site.
BTW, the landing site has been named Bradbury Landing after the late author of The Martian Chronicles.
This image was taken by one of Curiosity’s Hazard-Avoidance cameras. The camera has a fish-eye lens.
Image Credit: NASA