I've seen a few deer there. Could lease a few tracts out for hunting or open the track back up.
Several of those buildings could be fixed with a bulldozer though.
I don't know if it would really make enough money on deer hunting. I would have to think the people in TN have plenty of places to hunt for free. And to attract people out of state you would have to have some sort of deer management program, which is another whole business.
With that huge pavilion on top I would think with the right marketing and advertisement a person could make decent money off of it. Advertise the hell out of for wedding venues. And by advertising I would just go buy a database dump of all the wedding planners in the US and start hitting them up. Let them do all of the work, just rent the pavilion out for $4k a pop. There is a huge market for this. Another idea would be to hit big time corporations for team building efforts. Build a few obstacle course for them to play on and do whatever or offer some sort of off-roading event. Either build a couple of buggies that can carry passengers or just make a deal with some of the locals to take them out on the trails. A couple of concerts through out the year. A big Halloween bash with some awesome hayrides through the trails at night.
The race track has all kinds of opportunity as well. Derbies, truck and tractor pulls, tough truck course. Running any actual races at night could pose a potential noise problem with the neighbors, being that it's at the bottom there.
Not that I have given this much thought lol.