 Twenty-five years later, the project was resumed by Edmund Grainger and Mel Ferrer with MGM.Ferrer traveled to South America to select possible filming locations, but eventually concluded that the jungles there were too dense and dark to allow their use in the action sequences of the film.He did arrange for nearly an hour of jungle footage to be filmed south of Orinoco and in the Parahauri Mountains, much of which was incorporated into the film.