Deliverance

Four city-dwelling businessmen decide to take a canoe trip down the pristine waters of the Chattooga River for one last look at its splendor before progress alters its course in Deliverance; a tense, psychological pressure-cooker starring Burt Reynolds and John Voight. Despite warnings from locals about the backwoods areas they will encounter on their trip, the quartet paddles on and are soon to discover that they're mentally unprepared for what traumas are about to befall them.