Toph,
Nope. I was hoping somebody here did.
I can't pinpoint the exact location of the falls, either, although I understand that it is on a tributary leading into Collier Creek, and not on the actual creek itself. Supposedly there is also at least one waterfall at the head of Collier Creek's canyon.
I suspect that Shangri-La Falls is at one of the following two locations: 34.2595, -87.2870, or 34.2670, -87.2960. I've been wrong before.
The only access methods I can see are those two presumably long since closed and useless, or private (is that what a purple road is?), "roads", a walk all the way from Cheatham Road, or canoe via Brushy Creek. Of those options, I imagine that canoe is probably the most likely the way most people get there.
http://terraserver-usa.co...%7cDouble+Springs%7cAL%7c