EDIT (Updated 07/08/2010) -Updated the terrain with a GeoControl terrain.
Programs(s) Used: Terragen 2 Deep Edition, Photoshop CS4 and GeoControl for the terrain.
Terrain is much better than the previous render. I still have no idea how the terrain was such a mess on that one so I've re-rendered this one with desert terrain preset from GeoControl 2.
Minor postwork in Photoshop CS4 including the vignette effect.


It's wonderfully rendered, and I can tell you put a lot into it! My only thing would be that the cloud look a bit...I dunno...like they're motion blurred, but they still add a nice effect! Maybe a nice rising sun or moon would add some interest to the picture, as well!
Keep up the nice work!