That's very cool there Steve. I already read your earlier post to this, and have been playing around with it since, so thanks for that little tidbit of info there, too. :) And you know, you're right-- that does seem to add a great deal of realism to this landscape. I also was thinking--- the possibilities are endless in what kind of cloud shadows one could have by using a trans map mapped to a plane, out of the camera's view, and with a light behind it. But I guess that's what you said already. ;) Cool new technique to play with!