The last half hour is rather exciting with surprise attacks, gore and finally some focus put on these maniacal cavemen. Despite the enjoyable latter parts of the movie, I didn't find it to be great enough to make up for the long ride that it took to get to that point. Bone Tomahawk is a decent watch, but I'd probably struggle to get through another long ride just to experience that final half hour again.
What did you think of Bone Tomahawk?