El sonido de la muerte (1967)
When a group of isolated people in the Greek mountains set off a cave explosion, they are menaced by an invisible shrieking dinosaur that had been buried for eons
Directed by: José Antonio Nieves Conde
Starring: James Philbrook, Arturo Fernández, Soledad Miranda, José Bódalo, Ingrid Pitt, Antonio Casas
Links: IMDb, Movie posters, Movie stills