I enjoyed this movie. My only criticism is with authenticity. It was filmed in Canada in terrain very different from the actual Ft. Belknap. That fort was largely built of stone rather than wood. The snake pit has one rattlesnake in it. The rest are some other kind of snakes. The costumes are pretty good. There is some beadwork that's loomed and kind of modern, but mostly it's very well done.
Review of Black Fox
