Upstream from Soquee River Falls, the Left Fork Soquee River splits into two significant forks: the North Prong and Middle Prong. Both prongs flow through an extremely remote and inhospitable section of the Tray Mountain Wilderness. The Middle Prong of the Left Fork Soquee River has several large waterfalls. I've seen pictures of two notable waterfalls here, but aerial imagery suggests there are others. 

The uppermost waterfall on the Middle Prong Left Fork Soquee River lies at the 3,520-foot elevation near the river's headwaters on Tray Mountain. I've seen it referenced as Double Den Falls in a Facebook post by Greg Ford, as well as Upper Tray Mountain Falls. This waterfall is about 60 feet high and drops over a large bluff, partly enshrouded in rhododendron. It is best seen in wet weather. Reaching this spot requires a long, difficult bushwhack down from the Appalachian Trail on Tray Mountain. 

To learn about more waterfalls in the Helen area, see chapter 6 in Mark Ozboyd's "Waterfalls of Georgia" guidebook.