(Maryland)
Greenbrier State Park is a public recreation area located on South Mountain, three miles (4.8 km) northeast of Boonsboro in Washington County, Maryland, USA. The state park has camping, hiking trails, and a 42-acre (17 ha) man-made lake. It is managed by the Maryland Department of Natural Resources. (Ref: https://en.wikipedia.org/wiki/Greenbrier_State_Park)