This is Red Fork Falls in Unicoi County, not too far from Beauty Spot on Unaka Mtn.
DIRECTIONS: Take exit 23 off of Interstate 26. Turn south (right) at the town of Unicoi. Drive 0.8 miles to state road 107. Turn left (eastward) and go 7.6 miles, then turn right on Unaka Mountain Road. After 0.7 miles the road turns to gravel. Drive another 0.5 miles and park at an undesignated turnout by a 4WD road. Hike down this road. You'll reach the creek quickly and have to ford it, and then do it again in 100 feet. Follow the path to the top of the falls, though the path is not very clear in the beginning. A fairly steep short path is to the left of the falls and takes you to the base. Don't go to the brink of the falls. Many have and many have died. There are also lots of smaller cascades above and below these falls.