Featured National Recreation Trails: Tunnel Hill State Rail Trail, Illinois

The trail runs for 45 miles from downtown Harrisburg to Karmak in southern Illinois. The tail is managed by Illinois Department of Natural Resouces with an additional 2.5 miles managed by the City of Harrisburg. A 543-foot long tunnel gave the nearby town its name, and now the trail.

Beginning in Harrisburg, the trail is at 370 feet above sea level, rising to 680 feet at Tunnel Hill and then dropping to 340 feet at Karnak. The trail crosses 23 trestles ranging from 34 feet long to 450 feet. The longest, Breeden Trestle, is also the highest at 90 feet. The abandoned railroad right-of-way varies between 40 and 200 feet in width.

The Tunnel Hill Trail is part of a former railroad founded by Civil War General Ambrose Burnside. In 1872 Burnside and others began the Vincennes & Cairo Railroad, which connected Vincennes, Indiana and Cariro, Illinois.

The central section of Tunnel Hill Trail passes through the Shawnee National Forest, Illinois’ only national forest. The southern section of the trail traverses the Cache River State Natural Area, a significant state, national, and international wetland resource.

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