As posted previously, I’ve been playing with the beginnings of a LOD terrain renderer for large datasets. I combined this technique with some procedural terrain generation via libnoise, and got some interesting results.
They look pretty awful, but I was more worried about the LOD mechinism than the looks. Rest assured that judicious use of texture splatting and gap fixing would make this look a lot more realistic 
hey iv been wanting to do this for some time could you sent me mail perhaps tip on how u did it !