A turn of the century wild west show struggling to make a living in Mexico comes into the possession of a tiny prehistoric horse. This leads to an expedition to the Forbidden Valley where they discover living dinosaurs. They capture one and take it back to be put on display, leading to inevitable mayhem.
Genre: Adventure, Fantasy, Science Fiction, Thriller, Western Actors: Curtis Arden, Dennis Kilbane, Freda Jackson, Gila Golan, Gustavo Rojo, James Franciscus, Laurence Naismith, Mario De Barros, Richard Carlson Directors: Jim O'Connolly Production: Warner Bros.-Seven Arts