Michael Craig, Joan Greenwood, Michael Callan, Gary Merrill, Herbert Lom, Beth Rogan, Percy Herbert, Dan Jackson
United Kingdom, United States of America
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 .