Never seen anything other than crappy hand drawn maps of the main trails. Best to either ride with someone who knows the place, or better yet, just go and explore it on your own. It's small, but packed with trails of every type. What kind of riding do you do?
I like to call my riding a hard core All Mountain or a light Free ride. I do drops up to 7' tall and do some gap jumps.
This is the only map I can find.
Yeah, no offence to the maker of that map, but it is almost worthless.
Like I said before, the place is small(maybe 3 miles end to end) My advice would be to take a couple of hours to learn the main logging roads that connect everything. Make your way up to "5 points" intersection, and explore all the main options(you can access all areas from here)Once you learn how the network of logging roads work, then you can begin to explore and connect all the options that branch off the main connectors. This should keep you busy for many visits to come.
The type of riding you describe is a perfect fit for GP, enjoy.