Excellent trail close to Atlanta that provides a moderate workout. For a full workout ride the trail and then turn around and ride the complete trail back for a 11 mile trail. I reccomend riding a warm up lap on the trail of your choice, then start riding intense when you get the feel for the trail. Although I couldnt find the big 8 mile loop, I just continued to ride the red trails, which are the most technical. The red is VERY tight with some tough turns and switchbacks.
Logs seem to populate some trails, but they are easily negotiable to anyone with any skill.
However, I would recomend the wider blue and green trails to the less experianced. This course reminded me of a shorter Conyers, without the all the climbing. Overall, a great technical course that seems different every time you ride it. Really fast, really technical, lots of fun every time. Also, it is really easy to find the trails that you want to go on, it is a really well marked trail.