1st 75 feet tall and 75 feet long and 0.01 feet thick [rot] wall. 2nd 100 feet tall and 100 feet long and 0.01 feet thick clear wall is 50 feet behind the 1st wall. the ground is transparent. the sky is charcoal. a bison is 3 feet behind the 2nd wall. it faces southwest. it is -0.1 feet above the ground. 5 gray lights are 3 feet behind the 1st wall. the sun's azimuth is 220 degrees. the sun's altitude is 20 degrees. the sun is gray. a dim linen light is 3 inches above the bison. the camera light is dim. 2 dim cream lights are 3 inches above and 3 inches to the front of the bison.