Looking west over the front of the rover along the southern edge of the Kimberley outcrop, with Gale Crater’s rim in the distance. The ground slopes here, so the horizon appears to tilt.
NASA description: This image was taken by Navcam: Left B (NAV_LEFT_B) onboard NASA’s Mars rover Curiosity on Sol 610 (2014-04-24 22:11:12 UTC).
Sol 610 raw images (from all cameras), and Curiosity’s latest location map.