Curiosity Right Mastcam (M-100)

Sol 601 11:41 Site 31/0724 0601MR0025350000400764C00_DXXX
Grain size of mega ripple target Forman [observations]
Apr 15, 2014 at 2:23:07 PM UTC (approximate)
Credit: NASA / JPL-Caltech / Malin Space Science Systems

Image Source