I joined Tennessee Rovers a couple years ago and have gone on a couple trail rides with them. Their big fling, the Tennesee Adventure Rally is held at Windrock, a killer off-road place in the Great Smokey Mountains. Located in Olive Springs, TN just outside of Knoxville, it has tons of trails from mild to extreme. They have a nice campground, plenty of trails to keep a Land Rover busy for several days. They change up the trails every once in a while, but sell maps so you can find your way out. Mud, rocks, water, you name it. The only problem is its open to ATVs and on the weekends they can get plentiful. If people are up for a little trip, I would be very interested. Windrock is open to the public. They usually charge $20/person/day, but its worth it.
I'll also keep my ear open to see if the TN club is having a trail ride up there in the near future and maybe some of us can caravan down. The club members have trucks from mild to insanly modified. Good bunch of guys.
Actually, TAR 2005 should be in July. Something worth considering.
http://www.tnadventurerally.com/
Here are some pics of TAR 2004