Thanks, be warned, mixing that many materials does have an adverse effect on render times, especially when you tack on GI or Radiosity. Sometimes it's worth it though, since I made that material I have ended up using it as my starting point on most of my terrains. I usually don't hang on to the water portion either, even though it's configured to map to parts of the terrain that are completely flat at lower elevations, it sometimes will form mini lakes where I don't want them, but it was a fun experiment to see what I could do with textures :) Here's a close up shot of the same terrain (to show procedural terrains ability to maintain detail as you get closer to them), just zoomed in on the center mountain.