1974 United Kingdom, United States English, German
During World War I, a German U-boat sinks a British ship and takes the survivors on board. After it takes a wrong turn, the submarine takes them to the unknown land of Caprona, where they find dinosaurs and neanderthals.
Director: Kevin Connor
Writer: Edgar Rice Burroughs, James Cawthorn, Michael Moorcock
Cast: Doug McClure, John McEnery, Susan Penhaligon
