Opened in 1945, Keystone is a 1,200-acre state park in rural Westmoreland County. The park is named after Pennsylvania's official nickname, The Keystone State (a keystone the architectural piece at the apex of a building's arch or vault).
The park's focal point is a 78-acre lake constructed by the Keystone Coal & Coke Company in the early 1900s. It provides a habitat for both warm and cold water species of fish. Swimming and limited boating is permitted.
Keystone State Park has two campgrounds: one on the shores of Keystone Lake with 40 campsites for tents or campers; and another in a more remote part of the park with 60 campsites. Each campground has some sites with an electric hook-up, a modern bathhouse and a sanitary dump station.
The park also has 11 modern cabins that can sleep up to six guests in two bedrooms. The cabins are equipped with a modern bathroom, a kitchen with a stove, microwave and refrigerator. The yard areas have picnic tables, grills and fire rings.
Another popular feature is Lakeside Trail. This two-mile, level trail loops around the lake on park roads and walkways. Mountain bikes must stay on park roads or gravel walkways. All other trails are foot-traffic only.
Daily, sunrise to sunset.
Free, on-site parking is available in three lots.