Cache River State Natural Area is situated in southernmost Illinois within a floodplain carved long ago by glacial floodwater of the Ohio River. Among the outstanding natural features found within the area today are massive cypress trees whose flared bases, called buttresses, exceed 40 feet circumference. Many are more than 1,000 years old, including one that has earned the title of state champion bald cypress.
Visitors can canoe the Lower Cache River through the magnificent cypress-tupelo swamp, or visit The Barkhausen-Cache River Wetlands Vistor Center to learn about the history of the Cache River wetlands