Last file has been changed. I left a redundant node in for some reason.
mhaze, I looked at your file. That's cool. I noticed you used the altitude blend thing. I also noticed you use the voronoi to alter the terrain shape unlike in my render files on the other thread where I used it for very small stones. Both is fine.
I've had some ideas to try to make a file with a few different stones sizes but I haven't got that right yet. You're method is fine and looks good. I think these larger rocks should be quite spread out as large boulders. Just a feature here and there or the exact opposite, very close without any distribution other than altitude. When you start to be in-between they look a bit unnaturally evenly spaced so then you need the extra distribution.