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.
74 min
Written byMillard Kaufman
Bruce Kellogg
Wright Thompson, Jr.
Otto Waldis
Dr. Max A. Bauer
Jim Bannon
Andrew "Andy" Ostergaard
Tom Handley
Dr. James Paxton
Dick Cogan
Dr. George Coleman
George Baxter
Carlisle Foundation Chairman
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Cast, crew, and the names behind Unknown World.
Dr. Joan Lindsey
Dr. Jeremiah Morley (uncredited)
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