Comet 67P/C-G: Ash and Seth
Rosetta OSIRIS narrow-angle camera image of part of Comet 67P/Churyumov-Gerasimenko's large lobe, focusing on the smooth region named Ash and the exposed layers in Seth.
The image was taken on 10 September 2014, when Rosetta was about 27 km from the surface of the comet. See here to view this image in 3D.
Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA