Chinquipin Offroad Park
Chinquipin Offroad is a privately owned rock crawling park in Sneedville, TN. It is only open by appointment and for special events. As Jeff mentions on his website it's not a place to trail ride with the family. I've been there on a couple of occasions during events and I can assure you it is not for the faint of heart.
Chinquipin Offroad Park offers the best and most extreme rockcrawling courses I've seen anywhere in the East Tennessee area. I would highly recommend making it to an event as it's amazing to watch all the awesome custom built machines climb around on the obstacles.
Be sure to check out their website for events and directions: http://www.chinquipinoffroad.com