Very cool. Depending on the scale it either looks like a vast desert ringed by mountains or a dragon's lair. I agree with DE about the "glow" a large blur on that would go a long way to lessening the slightly jarring contrast. The mountain the middle of the ring looks a bit "cut off" as well. I admire people who can create accurate (and interesting) height maps and this one is great. I love the mountains they are just about perfect. Overall this is great and I'm looking forward to seeing it progress.