I saw this in the mid 80s on a VHS. Saw few years back on a pirated DVD. This film has a bare story line, no dialogue other than caveman grunts and groans, a lil slow but exciting and brutally violent, and sometimes laughable pre historic survival movie. The best part of the movie (including Miss Welch) are the creatures. Other than a few real life things blown up in size, they are brilliant. Harryhausen just knows how to make creatures. This is a cult classic, entertaining showcase for Harryhausen's skills, and has enough action. The movie has a giant iguana, ape men, Brontosaurus, a giant spider, Archelon, Allosaurus, Ceratosaurus, a Triceratops, Pteranodon n Rhamphorhynchus. Audience get to see miss Welch in a two-piece deer skin bikini. Mankind's first bikini.