Scenes originally from the movies Sacrifice! (crocodile being killed with a small knife, and a woman being killed and eaten by cannibals), Last Cannibal World (Me Me Lay's death sequence), and The Mountain of the Cannibal God (castration scene, footage of a snake eating a monkey, and a man being pulled into the water by a crocodile), were edited into this movie.
The antagonist character of Jonas, and his commune and of the climatic mass suicide, was inspired by the Jim Jones People's Temple cult in Guyana who committed mass suicide in November 1978 resulting in the deaths of over 900 people.