We used Bryce 4.0 to make the background. One tricky part was using the mountain model to make the fall. The fall around by mountains like the imaging above.
1. Create a new mountain model first and press E enter the edit mode, then choose the hard in brush and paint all square screen to bright white, then paint a concave black arc like the imaging above to use for fall. After that press eroded a few times to create the texture on the fall.
2. Now back to start page and press M enter the material edit mode to choose the color for the water in fall. We used Deep Blue in "Water&Liquids" (The third one in first row) for the fall color.
3. Last thing is place this fall in the middle of the screen and create mountains around it.
Copyright Yifeng Li & Zifan Meng @ 2007