Oblique view of <a href="https://en.wikipedia.org/wiki/Bolyai_(crater)" class="extiw" title="en:Bolyai (crater)">Bolyai</a> crater, on the far side of the moon, facing southeast with a high sun angle.  The dark patch is mare lava in the bottom of the crater.
James Stuby based on NASA image
Flickr, Project Apollo Archive, Apollo 8, Magazine 12/D, <a rel="nofollow" class="external text" href="https://www.flickr.com/photos/projectapolloarchive/21880342739/">AS08-12-2214</a>