There are 5 terrains in this render. The Background Mountains were made from a photo, converted into a Bryce terrain (not just a billboard). Mountains in the middle; one on the left side in sunlight, one on the right side in shadow, were created using high-res grayscale images. The terrain in front of them is made from another high-res grayscale image and the foreground terrain is a simple Bryce terrain. The Yaks were made from DAZ bull; I had to create some morphs for them and new texture maps. Chorten (Stupa), stones, birds etc. modeled by me. Some of the flags are 3d, some 2d, completed in post work. Zoom in to see all of the details!