The other short trail over by Bluff Overlook is the Historic Tunnel Trail. At less than a quarter of a mile one-way, it also is too short to count towards my hiking challenge this year, and yet it’s still definitely worth doing if you’re in the area. The Historic Tunnel in the trail name refers to one of the oldest man-made tunnels still in existence to this day. Back in 1818 Montgomery Bell, a leading industrialist and, at the time, the richest man in Tennessee, had the tunnel by hand built as part of his iron forge operation. Although the forge is gone, the tunnel and the waterfall it created, can still be seen. There’s no swimming allowed at the base of the waterfall (although you’re bound to see people breaking that rule discreetly on an almost daily basis), but just the sights alone are sufficient to make the short hike a worthwhile success.