During the summer months on route 732 outside of the park main entrance turn right about 1 and half miles on your left is a horse rental and riding area not sure of the prices.
I don't think they offer horseback riding, but there's a place to take your own horses to ride their trails.
Last i heard the horses got sick a few years ago. So they stopped doing it. It was $20. I haven't been in a year.
Thanks! Your answer is awaiting moderation.