Unknown World is currently streaming on Prime Video and Tubi

Unknown World (1951)74 minAdventure, Science FictionRating 42/100

As nuclear war fears peak, a scientist sends a team with an atomic-powered craft to find a safe habitat under the earth to survive a nuclear winter.

Cast: Bruce Kellogg, Otto Waldis, Jim Bannon, Tom Handley, Dick Cogan, George Baxter, Marilyn Nash

Director: Terry O. Morse