Johnson's Shut-Ins Trail

Johnson's Shut-Ins State Park lies in Reynolds County within the St. Francois Mountains of southeast Missouri, United States, and is home to one of the state's most popular natural swimming destinations alongside accessible trail hiking. The main loop covers approximately 2.4 miles round trip around the Shut-Ins — a series of volcanic rhyolite rock formations that channel the East Fork Black River into carved pools, chutes, and natural water slides. The park entrance at 148 Taum Sauk Trail, Middle Brook is reached via private vehicle from US-67 S to MO-21 N; parking is free and ample. No permit is required for day use, though a parking fee may apply during peak summer weekends. Current conditions are available by calling (573) 546-2450. Trail surface is a mix of compacted gravel paths, rock outcroppings, and sandy riverbank stretches. Shade is moderate, with hardwood canopy covering sections between exposed rhyolite formations. Elevation change is minimal — approximately 200 feet across the route — making the loop accessible to most fitness levels. The trail winds along the riverbank, crossing over rocky shelves and around the pools that define the Shut-Ins experience. Key landmarks include the main swimming area where the Black River narrows into chutes suitable for natural water sliding, several deeper pools used for swimming, and interpretive panels along the boardwalk sections explaining the park's geological history — including the 2005 AmerenUE Taum Sauk Reservoir breach that sent approximately one billion gallons of water through the park, devastating the trail system before a multi-year restoration reopened it in 2009. Water shoes are essential for the slippery volcanic rock surfaces in and around the swimming areas. Potable water and restrooms are available at trailhead facilities. For hikers seeking a longer day, the park also connects to the Goggins Mountain Trail, a 15-mile loop through the surrounding Ozark highlands.