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Keystone State Park is a multi-use park with overnight facilities and year-round recreational opportunities.
The 1,200-acre park is in Derry Township, Westmoreland County, and boasts a 78-acre lake constructed by the Keystone Coal and Coke Company in the early 1900s. The coal company purchased the land from the McClelland Family in 1909 and the original farmhouse remains in use in the park today. Keystone State Park opened in 1945.