The Hapi (neck) region and the Hathor cliffs - OSIRIS-NAC
A study of the boulder field in Hapi indicates that it was created by blocks falling from the cliffs of Hathor, rising on the right of the image.
This image was taken with the OSIRIS narrow angle camera on 22 September 2014 at a distance of 28.24 km from the comet.
This is the right-eye view of an anaglyph stereo image, which is available here.
Further details can be found in "Size-frequency distribution of boulders ≥ 7 m on comet 67P/Churyumov-Gerasimenko" by M. Pajola et al., doi:10.1051/0004-6361/201525975, published in Astronomy and Astrophysics.
More images of comet 67P/Churyumov-Gerasimenko can be found in the '67P - by Rosetta' collection.
Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA