Forestville/Mystery Cave State Park

(Minnesota)

Forestville Mystery Cave State Park is a state park in Minnesota. It contains the village of Forestville, which has been restored to a 19th-century appearance. The Minnesota Historical Society operates it as a historic site. Below ground the park contains Mystery Cave, the state's longest cave, which is open to the public. The park is between Spring Valley and Preston, Minnesota. (Ref: https://en.wikipedia.org/wiki/Forestville_Mystery_Cave_State_Park)