John Carradine
Prof. Millard Wyman
Cast (14)
Robert Clarke
Craig Randall
Phyllis Coates
Dale Marshall
Allen Windsor
Paul Whitmore
Sheila Noonan
Lauri Talbott
George Skaff
Dr. J.R. Matheny
Maurice Bernard
Old Man in the Caverns
Joe Maierhouser
Jim Wyman
Lloyd Nelson
Wilson, Sonar Man
Harry Raven
The Captain
Milt Collion
Hank
Lowell Hopkins
Reporter
Jack Haffner
Jimmy, Reporter
Robert Carroll
Narrator
Crew (7)
Jerry Warren
Director
Jerry Warren
Producer
Victor Fisher
Director of Photography
Harold V. McKenzie
Editor
James Sweeney
Editor
Marvin Herbert
Art Direction
John W. Steiner
Screenplay