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