Hi Will, The answer I have for this one might not be as good as you want to hear but I do my best to present what I get. I went out and picked up the picture from NASA and processed the area in question. As far as I can evaluate it, it looks like a pixel group malfunction. Most of the time if I get these, I just pass them by but since it was a request I posted it for you. Latter when time I would like to run this photo over my earth Moon math program to see if the proportions are correct. Keep them coming and thanks for the request.....

Deuem