I was over at a friend's house last night (Friday) playing a rip-roaring game of Desperado set in a desert environment. His desert terrain was really awesome - and I did not bring my camera. Terry said he'd take a few pics to send over. The "ground" for his terrain was a quilting fabric called "crackle", specifically the "tan" variant of "crackle". Click this link to see the crackle. It really looks like dried up cracked desert terrain!'
I am going to get some! I think that my brother might like some for his Sudan games. If so, he can let me know and I'll grab him some or he can seek it locally.