Well thank you, its good to see it put to some use
Initially I knocked this up quite quickly as some one was asking about canyon set ups. Then I got a bit carried away ...
My version had lots of small "holes" in the terrain render, even at high detail/AA settings. Yours doesn't, what have you done differently or is this a result of the new render options?
Take a look at the "function" canyons, they're everywhere
Happy rendering
Richard