The Lost World is a 1960 De Luxe Color and CinemaScope fantasy adventure film directed by Irwin Allen and loosely based on the 1912 novel of the same name by Arthur Conan Doyle. The plot of the film revolves around the exploration of a plateau in Venezuela inhabited by cannibals, dinosaurs, carnivorous plants, and giant spiders. The cast includes Claude Rains, David Hedison, Fernando Lamas, Jill St. John, and Michael Rennie.