Unknown World (1951)

Drilling into the forbidding depths of the earth!

With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.

• Release Date: 1951-10-26
• Runtime: 1h 14min
• Production Company: Lippert Pictures
• Production Country: United States of America
• Director: Terry O. Morse
• Writer: Millard Kaufman