So, a brief update. I'm still deeply entrenched in my battle with the mountains. I've tried a few different things so far and still haven't quite got the look I want. I'm on a slightly new track now, and it looks like I might finally get something close to what I want, just have to wait out the erosion process and see what the final results look like. Hopefully I'll be able to post a preliminary render from Terragen later today.

GW