Curiosity Right Mastcam (M-100)

Sol 403 10:50 Site 16/0328 0403MR1670000000E1_DXXX
Image dark and light toned rock target Fremouw [observations]
Sep 24, 2013 at 2:51:49 AM UTC (approximate)
Credit: NASA / JPL-Caltech / Malin Space Science Systems

Image Source