Sol 792, October 28, 2014. In its 100-mm (telephoto) mode, the Mastcam makes a two-frame composite of a much-eroded layered rock with a highly fragile appearance.
NASA description: This image was taken by Mastcam: Right (MAST_RIGHT) onboard NASA’s Mars rover Curiosity on Sol 792 (2014-10-28 21:19:32 UTC).
Sol 792 raw images (from all cameras), and Curiosity’s latest location map.