Upper Stonewall Falls is a small but very picturesque waterfall, about 10 feet high, located along Stonewall Creek a few hundred feet upstream from Stonewall Falls. It is a little more hidden than Stonewall Falls and sees fewer visitors, being accessed by a steep scramble path. To reach Upper Stonewall Falls, keep following the hiking trail upstream to the right of the lower falls and then look for a side path descending steeply to the bottom of the upper falls. 

For detailed directions, see page 274 in Mark Ozboyd's "Waterfalls of Georgia" guidebook.