 This miniature rear projection was used in the scene where Kong is trying to grab Driscoll, who is hiding in a cave.The scene where Kong puts Ann in the top of a tree switched from a puppet in Kong's hand to a projected footage of Ann sitting.The scene where Kong fights the snake-like reptile in his lair was likely the most significant special effects achievement of the film, due to the way in which all of the elements in the sequence work together at the same time.