Erosiaart, I simply positioned the sun in Terragen to mimic the position of the sun in the Bryce environment and rendered the sky in Terragen. I then selected all my canyon terrains in Bryce and rendered a mask. Using the mask together with my Bryce render and the Terragen sky render in Photoshop, I composited the 2 images onto each other. Terragen is a wonderful addition to my tool kit. Stop with the shoes already, I got hit on the head. :)