This is modeled after an old image of mine, but was remade from scratch. The terrain is World Machine (which I am loving), the snow is TU's preset. This came out even better than I'd imagined. Terragen 3 is on a roll for me, I love how everything is turning out and how quickly they render. I may just render a larger version of this.
http://aresjohnson.deviantart.com/art/White-Mountains-of-Drago-403139494