Very cool! You're getting a real handle on rendering in Yafray. Lord help me, I just had a perverse thought! What if you imported several Bryce terrains into Wings(with materials) and rendered a simple landscape with Yafray? I don't suppose Wings could handle the poly count, but you gotta admit it's a whimsical ideer. I also blame my addiction to Wings on Draculaz, and I must admit this forbidden fruit looks very tempting too,lol.