There's a link to C4D file of a mountain created by following the talk Eric Smit gave here.
At the time I was looking to create nice landscape without the need of 3rd party plugins. So please watch that presentation if want to see what parts of the noise, materials affect the shape and look of the mountain.
Create instances and convert to object to lighten the load on C4D. It gets pretty sluggish.
I think this link expires in a week so let me know if need it re-uploaded.
You might get some use for it.