Varied terrain from double track groomed to tight single track. many side trails with log jumps and stream crossings.
I90 West from Chicago to I39 North, Exit onto E. Riverside Blvd. heading west. Turn right on Perryville Rd. to Harlem Avenue. Right on Harlem avenue to Park entrance
http://www.singletracks.com/item.php?c=1&i=1028