(Pennsylvania)
Colonel Denning State Park is a 273-acre (110 ha) Pennsylvania state park in Lower Mifflin Township, Cumberland County, Pennsylvania in the United States. The park is in the Doubling Gap of Blue Mountain on Pennsylvania Route 233 between Newville and Landisburg. Doubling Gap Lake is a man-made lake covering 3.5 acres (1.4 ha). Colonel Denning State Park is surrounded by Tuscarora State Forest. (Ref: https://en.wikipedia.org/wiki/Colonel_Denning_State_Park)