(Williams Grove Park, 44', 1969, 38-21-A) across pond outlet in Williams Grove Amusement Park S. of Mechanicsburg, Monroe Township, Cumberland County, PA. US15 SW 3.0 miles from jct with I76 (Pennsylvania Tpk) exit 236 just SE of Mechanicsburg, W. on Lisburn Rd. 1.4 miles, S. on Williams Grove Rd. 0.6 miles, W. on Park Pl. 0.3 miles to the park & bridge on the S. side of the road. Admission. (6-11-06, N40° 08.99', W77° 01.97') Photos by Dan McWilliams.