Sound of Horror
El sonido de la muerte (original)
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
Starring James Philbrook, Arturo Fernández, Soledad Miranda, José Bódalo, Ingrid Pitt, Antonio Casas, Lola Gaos, Francisco Piquer
Watch "Sound of Horror" on Amazon released in 1967. It's a drama and horror movie, and has a rating of 4.9 out of 10 from Imdb which is fairly low for this kind of movie, and is currently only available for purchase or rent.
