The Jungle Chase is the background music heard in Indiana Jones and the Kingdom of the Crystal Skull during the Jungle Chase through Brazil, and was composed by John Williams. The cue begins as Mutt Williams passes Indiana Jones his concealed switchblade while they are held captive with Marion Ravenwood in a Soviet truck, just after they knock the guard unconscious. The piece ends when the vehicle Indy's party later commandeered crashes in the jungle. Although the full version plays for about ten minutes in the film, only 4:23 of the music is included on the soundtrack album.