

26/10/1951
With the cyclotram, an atomic-powered rock-boring vehicle, Dr. Jerimiah Morley leads an expedition into a subterranean world.

Bruce Kellogg
as Wright Thompson, Jr.

Otto Waldis
as Dr. Max A. Bauer

Jim Bannon
as Andrew "Andy" Ostergaard

Tom Handley
as Dr. James Paxton

Dick Cogan
as Dr. George Coleman

George Baxter
as Carlisle Foundation Chairman

Marilyn Nash
as Dr. Joan Lindsey

Victor Kilian
as Dr. Jeremiah Morley (uncredited)
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