This scenic natural area contains all sorts of fascinating sandstone rock formations including box canyons and wet weather waterfalls. The sandstone rock here is the Lamotte sandstone that was formed from sandy beaches of a shallow ocean that existed here 500 million years ago. Since then layers of limestone were buried upon this sandstone but millions of years of erosion and uplift of the Ozark plateau have exposed the sandstone we see today. Over the eons, ice, rain, wind, plant roots, and streams have worn away this sandstone to form the many unique geologic features here. Some of the interesting geologic features include a double arch that holds up a shelf of sandstone, narrow slot-like canyons, hoodoos (mound or pillar-like sandstone blocks weathered into unusual shapes), a spring flowing out of sandstone (Pickle Springs), and sandstone talus slopes.