The m715zone.com had their last gathering near there last June at a place called Wheelin In The Country near Summertown, TN, S of Nashville near Columbia.
It was a pretty good place, lots of easy stuff, plenty of challenging stuff. There were a couple of trails I wasn't up to running. I was in a CJ5 and the short wheelbase wasn't good on the ledges, especially going down...endo's were a real possibility with the SWB.
We had the place to ourselves for a weekend with about 12 rigs.
EDIT: here is a thread with some pictures from last June at WITC. The first few pages are BS, trail pics start showing on page 4.