During World War I, a German U-boat sinks a British passenger ship and takes the survivors aboard. After getting lost in fog, the submarine surfaces near the unknown island of Caprona, a lost world 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
Bobby Parr
Ahm
Declan Mulholland
Olson
