Jackson–Washington State Forest in southern Indiana, near Brownstown, covers more than 18,000 acres assembled largely through state purchases in the 1930s and 1950s. It became a major protected landscape for conservation and recreation, offering camping, fishing, hunting, archery, and trails for hiking, horseback riding, and cycling. Within the forest, a historic picnic area in an oak grove above the former Sawmill Lake preserves work completed by the Civilian Conservation Corps in 1934, including stone and timber picnic tables, fireplace ovens, shelters, steps, and a stone platform. The site was added to the National Register of Historic Places in 1997.