Plot
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.
Writer | José María Fernández Unsáin |
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Director | Alfredo B. Crevenna |
Actor | José Elías Moreno, Carlos Cortés, Kitty de Hoyos |
Country | Mexico |
Production | Producciones Sotomayor |