Unknown World 1951
With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.
- Released: 1951-10-26
- Runtime: 74 minutes
- Genre: Adventure, Science Fiction
- Stars: George Baxter, Jim Bannon, Otto Waldis, Victor Kilian, Marilyn Nash, Bruce Kellogg, Dick Cogan, Tom Handley
- Director: Terry O. Morse