Cast
Richard Denning
Hank Scott
Mara Corday
Teresa Alvarez
Carlos Rivas
Artur Ramos
Mario Navarro
Juanito
Carlos Múzquiz
Dr. Velazco
Pascual García Peña
José de la Cruz
Fanny Schiller
Florentina
Arturo Martínez
Major Cosio
Pedro Galván
Father Delgado
José Chávez
Train conductor (uncredited)
Manuel Sánchez Navarro
Victor Steven (uncredited)
Roberto Contreras
Chumacho (uncredited)
Quintín Bulnes
Lineman killed on pole (uncredited)
Isabel Vázquez
Villager (uncredited)
Leonor Gómez
Villager (uncredited)
Bob Johnson
Narrator (voice) (uncredited)
Crew
Edward Ludwig
Director
(Directing)
David Duncan
Screenplay
(Writing)
Robert Blees
Screenplay
(Writing)
Paul Yawitz
Story
(Writing)
Willis H. O'Brien
Visual Effects
(Visual Effects)
Jack Dietz
Producer
(Production)
Frank Melford
Producer
(Production)
Paul Sawtell
Original Music Composer
(Sound)
Lionel Lindon
Director of Photography
(Camera)
Edward Fitzgerald
Art Direction
(Art)
Willis H. O'Brien
Special Effects Supervisor
(Visual Effects)
Wah Chang
Creature Design
(Visual Effects)
Pete Peterson
Animation
(Visual Effects)