Big Cypress Tree State Park is a 27-acre state park that lies in the floodplain of the Middle Fork of the Obion River. Hiking is a popular activity here given all of the natural scenery and the history.
From Jackson, take U.S. Hwy 45E north through Greenfield: then just north of Greenfield, turn left on Hwy 445 (Kimery Store Rd.), and follow the road for approximately 5 miles to the natural area entrance on the right.
http://www.tripleblaze.com/trail.php?c=3&i=5443