Tunnel Hill State Trail 
Highway 146 East
Vienna, IL 62995
618-658-2168
https://www.dnr.illinois.gov/recreation/greenwaysandtrails/pages/tunnelhill.aspx
State Park: Bike, Birding, Hike, Picnic, Walk
At one time, the rumble of freight cars reverberated through the narrow tunnel. Wooden trestles, with their system of slanted supports and horizontal cross pieces, spanned numerous bluffs and creeks. Passengers in Pullman cars clocked the miles with these and other landmarks as they traveled one of southern Illinois’ most scenic routes. Today, the railroad is gone. The route, known as Tunnel Hill State Trail, remains.