Turok and Andar are waylaid by turtle riding cavemen in "Island Of The Doomed." The two-part story starts as the captured pair are hauled on the backs of sea turtles to a tall cliff island where they are to be sacrifices to the turtle god. There, they meet the former chief of the turtle men, who was also sent there to die. In part two, they are attacked by a charging triceratops, which gallops along the narrow pathways. Their only hope is to kill the beast, and find their way off of the island. This issue is reprinted in TUROK #121.