Looking for movie

[ChasManiac]

I saw this movie being asked about on another forum. I would like to see this. Anyone know what movie this is?

I'm looking for a movie where a woman is kidnapped by a horse-loving sadist, who apparently wants to treat her like an animal, he keeps her in a cell in what appears to be a cabin in the woods. In the end he wants to bury her alive and someone arrives in time to save her. It's not a very old movie.