크레딧 출연 John Carradine Prof. Millard Wyman 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 스텝 Jerry Warren Directing Jerry Warren Production James Sweeney Editing Harold V. McKenzie Editing Victor Fisher Camera Marvin Herbert Art John W. Steiner Writing