A blue heron screeches overhead, and the floating boardwalk groans in the eerie, strangely beautiful swamplands of Cache River State Natural Area (150 miles southeast of St. Louis). This 14,000-acre preserve protects one of just six spots in the country where four ecological regions overlap, making for an incredible diversity of landscapes and wildlife. (618) 634-9678
Cache River State Natural Area
Illinois Department of Natural Resources
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