Big Spring State Park is a 45-acre (18 ha) Pennsylvania state park in Toboyne Township, Perry County, Pennsylvania in the United States. The park is on Pennsylvania Route 274, 5.5 miles (8.9 km) southwest of New Germantown. Big Spring State Park is a hiking and picnic area. A partially completed railroad tunnel in Conococheague Mountain is a feature of the park. (Ref: https://en.wikipedia.org/wiki/Big_Spring_State_Park_(Pennsylvania))