(Illinois)
Beall Woods State Park is an Illinois state park on 635 acres (257 ha) bordering the Wabash River and Keensburg in Wabash County, Illinois in the United States. 329 acres (133 ha) of the state park is an old-growth forest designated as a Natural Area by the state of Illinois. The trees within the forest consist overwhelmingly of hardwoods of the former Eastern Woodlands ecosystem. Portions of Beall Woods State Park have been designated a National Natural Landmark as the Forest of the Wabash. The state park was created in 1966. The nearest towns with any sizable commercial infrastructure, including hotels and grocery stores, are Grayville and Mount Carmel. The park does host a small primitive campground and maintains a visitor center which opened in April 2001. The park maintains 6+1⁄4 miles (10.1 km) of hiking trails, primarily through the Forest of the Wabash portion of the park. (Ref: https://en.wikipedia.org/wiki/Beall_Woods_State_Park)