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.
Doug McClure | Bowen Tyler | |
John McEnery | Captain Von Schoenvorts | |
Susan Penhaligon | Lisa Clayton | |
Keith Barron | Bradley | |
Anthony Ainley | Dietz | |
Godfrey James | Borg |
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