Wagon Train (1957)

S4E6 The Princess of a Lost Tribe

Under Major Adams' orders, Flint is tasked with leading three travelers to a campsite on a mountain rumored to be haunted. He approaches the journey with great care, as whispers suggest that a group of Aztecs, who were thought to have perished nearly 400 years ago during Cortez's conquests, may still inhabit the area.