Hello,
This image is displaying some lonely mountains dividing mare Imbrium (on the east side) from Oceanum Procellarium (on the west side).
Find Harbinger mons in the low-left corner, Delisle mons in the middle-right and the two Gruithuisen peaks on the top side.
The dark halo in the bottom-right corner is caused by dust.
http://www.lazzarotti-hires.com/2010...e-isolate.html
More to follow.