Summary: An American cowboy living in Mexico discovers his cattle is being eaten by a giant prehistoric dinosaur. (imdb)

Poster submitted by Gauntlet

AKA: El monstruo de la Montaña Hueca

AKA: La bestia de la montaña

Genres: Sci-fi, Horror, Western

Country: USA

Directed By: Ismael Rodríguez, Edward Nassour

Written By: Robert Hill, Willis H. O'Brien

Starring: Eduardo Noriega, Patricia Medina, Julio Villarreal, Guy Madison, Carlos Rivas, Mario Navarro, Pascual García Peña, Lupe Carriles

More information at the Internet Movie Database