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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.
Release: Aug 13, 1974
Runtime: 90 minutes
Language: English
Studio: Land Associates, Amicus Productions, Edgar Rice Burroughs Inc., British Lion Films, American International Pictures
Country: United Kingdom, United States of America