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Dark Sky Wonders

8/2/2025 | Washington State Park | De Soto, MO

Petroglyph tour – 4 p.m. at the petroglyph site

Washington State Park staff will offer a tour of the petroglyphs, the park's history carved in stone! Learn about these Mississippian-era carvings, the culture and community that created them, and possible interpretations. Enjoy a short stroll on a covered walkway with interpretive panels highlighting the cultural features.

Solar System Sensory Bags – 6 p.m. in the Big River Day-Use Area

Put together a sensory craft with a key to memorize the planets according to their appearance. This interactive program is intended for children but open to all.

Stargazing – 9 p.m. in the Big River Day-Use Area

Come out to the field in the Big River Day-Use Area to view the stars in our designated dark sky park, far away from city light pollution. A telescope will be available for a better view!


All activities are free and open to the public, and there is no need to register. For more information, call the park office at 636-586-5768.

Event time: 4 p.m. - 10 p.m.

Click here to see more astronomy events at Missouri State Parks.

Washington State Park is located at:

13041 State Highway 104, De Soto, MO | 636-586-5768

Associated activities

  • Interpretive Programs