Directed by Cy Endfield | Starring: Gary Merrill, Herbert Lom, Percy Herbert, Michael Craig

During the US Civil War, Union POWs escape in a balloon and end up stranded on a South Pacific island, inhabited by giant plants and animals. They must use their ingenuity to survive the dangers, and to devise a way to return home. Sequel to '20,000 Leagues Under the Sea'.

IMDb Mysterious Island movie posters