Meramec State Park, State park and cave system in Sullivan, Missouri.
Meramec State Park is a natural area in Missouri with limestone formations, dense forests, and five developed caves running along the Meramec River. The park covers a large stretch of land with exposed rock outcrops and an underground cave network that reaches across three counties.
Missouri set this land aside as a protected park in 1927, partly to preserve cave systems that indigenous peoples and early settlers had used for shelter over many generations. The decision came at a time when the state began to recognize the value of protecting natural landscapes from development.
The name Meramec comes from a Native American language and refers to the catfish that populate the river. Walking along the riverbank, visitors can see the fish-rich water and understand why that name has stayed attached to this place for so long.
Fisher Cave can be visited on a guided tour, where lighting and safety equipment are provided, making it accessible even for those without caving experience. For those who prefer the outdoors, the park has over 13 miles (about 21 km) of hiking trails through forest and along the river.
The underground passages of the park run beneath three separate counties, which is rare for a single park property. This is easy to miss when walking the surface trails, yet the limestone beneath your feet connects landscapes that are administratively separated above ground.
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