The Naked Prey, a movie by and starring Cornel Wilde made in the early sixties, was based on the true story of a mountain man captured by Indians near Three Forks Montana. He was stripped naked and given a head start as he was pursued by warriors. He succeeded in escaping them and found refuge in what is now Yellowstone Park. I'm thinking the man's name was Colter, and that Yellowstone was originally called "Colter's Hell" by the mountain men. Is that right Art? In Wilde's film, the action takes place in Africa and Wilde is a big-game guide captured by an African Tribe. Good film.