Release Date: 1965-09-02
Overview: After a young man is killed in an unexplored subterranean cavern and his girlfriend driven mad by something she saw there, a track found at the scene cannot be identified with any known animal and thus a scientific expedition is launched to find out just what it is that is living there.
Rating: 5.9 / 10
José Elías Moreno
as Profesor Díaz
Carlos Cortés
as Dr. Pena
Kitty de Hoyos
as Hilda Ramírez
David Reynoso
as Jaime Rocha
Columba Domínguez
as Laura Ponce
Alfredo B. Crevenna - Director
José María Fernández Unsáin - Writer
Raúl Lavista - Music
Jesús Sotomayor Martínez - Producer
Raúl Martínez Solares - Director of Photography
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