More than 18 miles of designated foot trails exists within Cache River State Natural Area. Other than Little Black Slough Trail and Tupelo Trail which are considered moderate in difficulty, the trails are easy to walk. A 5-mile segment of the 45-mile-long Tunnel Hill State Trail passes through the region, providing expanded opportunities for hikers and cyclists. Paralleling the Karnak-Belknap Road on its northern side, the Tunnel Hill Trail links Little Black Slough, the Lower Cache unit and the Henry N. Barkhausen Cache River Wetlands Center. Trail length is based on round trip distances.
To reach Cache River State Natural Area headquarters from the North, take I-57 south to I-24, go east toward Nashville, get off at exit #14 (Vienna), turn right at the stop sign onto US Rt 45, go south on Rt 45 through Vienna 7 miles. Turn right on the Belknap road for 4 miles to the stop sign in Belknap. Turn right at the stop sign on Main Street and go 2,000 feet and turn right onto Sunflower Lane (past the Belknap Methodist Church). Go north 1 mile to the park office, located in the white metal pole building.
http://www.tripleblaze.com/trail.php?c=3&i=3943