Turok and Andar witness a deadly clash between two mighty behemoths, and decide to follow one of the wounded to "The Burial Ground" in the hope that it may be a way out of Lost Valley. In part 1, they tail a brontosaurus until their journey is halted by hostile cave men who tell them to "Turn Back or Die!" Undaunted, they wait until nightfall and try again, this time following an injured Tyrannosaurus in the hope of learning "The Secret of the Sacred Place."