Gustavo Rojo

A group of women cheat on their husbands with some handsome men while a large inheritance is at stake.

The discovery of a midget horse, thought to be of a species fifty million years old, prompts members of a Wild West show to venture into Mexico's Forbidden Valley in search of world-wide fame and untold wealth. But they are met by prehistoric monsters, including "Gwangi," a giant dinosaur that decimates their ranks.

After his Mexican girlfriend dies in childbirth, a Confederate deserter swears vengeance on all those who have wronged him, including her father.