check out www.atvoffroad.net
we frequent the mounds, and bullgap and other trails.
bullgap, rose city loops are great, nice trails, some tight, some fast.
the mounds is awesome if you like mud.
check out my video http://www.youtube.com/watch?v=ndReAXQBTaE
that was at the mounds. and there is plenty more mud and water where that came from. awesome technical trails, hills, scramble area, water, mud, mud and more mud.