The Valley of Gwangi brings a dinosaur into the world of a western show, linking the thrill of discovery to the urge to capture and exhibit. The creature's size makes it valuable to people who underestimate the practical meaning of that size. Stop motion and live action share a dramatic task, giving ropes, horses and human movement a convincing relationship to an impossible animal. Watch how the spectacle changes once an encounter in open country becomes a public attraction with an audience close at hand.