Four astronauts returning from man's first mission to Mars enter a time warp and crash on a 26th-century Earth devastated by atomic war. At first unaware where they are, but finding the atmosphere safe to breathe, they start exploring and find themselves in a divided future where disfigured mutants living like cavemen inhabit the surface, while the normals live comfortably below the surface but are dying as a race from lack of natural water, air and sunlight.
as John Borden
as Garnet
as Herbert Ellis
as Deena
as Dr Eldon Galbraithe
as Henry Jaffe
as Timmek
as Mories
as Elaine
as Elda
as James (uncredited)
as Naga (uncredited)
as Slave (uncredited)
as Military Officer (uncredited)
as Mrs. Jaffe (uncredited)
as Ginny Jaffe (uncredited)
as Jaffe's Son (uncredited)
as Public Relations Officer (uncredited)
as Reporter (uncredited)
as Reporter (uncredited)
as Reporter (uncredited)
as Reporter (uncredited)
as TV Newscaster (uncredited)
as Radio Announcer (uncredited)
as Jule (uncredited)
as Beryl (uncredited)
as Nihka (uncredited)
as Vida (uncredited)
