This is something I heard about and thought it sounded mildly amusing – making terrain out of synthetic fur. Teddy bear rights activists are going to be in uproar!
But wait! Check this stuff out, I think people are on to something here:
This was taken from http://www.elladan.de/001%20fur%20mat%20test%20pieces/001.htm, and includes a brief guide on how it was made. Very impressive!