Washington State Park is known for its incredible collection of indigenous American petroglyphs and rock carvings, which were listed on the National Register of Historic Places in 1970.

The 2,147-acre park, which was built in the 1930s by the Civilian Conservation Corps, protects unique carvings that date back as far as 1600 C.E., giving significant archaeological clues to the culture and practices of indigenous tribes in the Missouri region.

Archaeologists also believe that the park's site once served as a significant ceremonial grounds for the Middle Mississippi people.

Swimming and fishing opportunities are offered along the banks of the Big River, with spectacular opportunities for hiking throughout the Ozarks offered along three hiking trails. Many of the park's historic New Deal-era structures still stand today, including the stones of the 1,000 Steps Trail.

13041 Missouri 104, De Soto, MO 63020, Phone: 636-586-5768

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