Very interesting idea! Thanks! That must have taken him ages to do.
I was browsing DeviantArt and came across this map by Saktoth.
Very interesting technique. From the link:
-Rob A>Originally Posted by Saktoth at DeviantArt
Lots of clone stamping....as Rob said, it must have taken ages to hide the seams.
Hey, if any one could make figure out how he did it, and make a tutorial, I would be very thankful.