doubleofive said:

Really can see the empty hanger they filmed it in front of now:

http://www.bedfordshire-news.co.uk/Star-Wars-Harrison-Ford-Carrie-Fisher-Luke-Hamill-space-38-years-filming-Cardington-Sheds/story-21725256-detail/story.html

Looks like the rock is there to cover the VW Bus!

LOL!

Before:

After:

I agree 100% - it's amazing the process works at all, it really is an art form. The thing I don't like about this painting, isn't the rock, it's the left wall that is recessed behind the vertical "door" that just looks so fake because there's no depth to it (it doesn't look like the wall is going back behind the door). And also for consistency the right-hand wall should be coming further forward. I guess this is the problem when a painting is done "in-place" and there's no time to go back and do another one to fix those things...