Yes, this was a bad movie (I watched it in a double bill with the similar-toned prehistoric tongue-in-cheek 'Prehistoric Women'--both from Mill Creek's 50-pack 'Nightmare Worlds'), but it was charming, short and sweet, and I enjoyed it. I wouldn't watch it again, probably, but it was decent fare to see once. I thought the way the credits were animated was cool (a low-budget Saul Bass), and I wouldn't have minded being trapped by the Wongo tribe, if I time-travelled back to that time, myself! At first, I thought they had misspelled Adrienne Barbeau's name, but no one looked like her in the film, and she would have been really young anyway.
It intrigued me that Tennessee Williams actually directed at least parts of the film. Though this film falls into the 'so-bad-it's good-territory, I'm glad it was made. Not everything has to be either a $300-million monster or Hamlet.