Heading southwest into Robert Frost Pass, which leads down between two rock-littered rises on the left and right.
NASA description: This image was taken by Navcam: Right B (NAV_RIGHT_B) onboard NASA’s Mars rover Curiosity on Sol 663 (2014-06-18 09:10:40 UTC).
Sol 663 raw images (from all cameras), and Curiosity’s latest location map.