Макконнеллс Милл штатының табиғи паркі

State park in Pennsylvania, United States

McConnells Mill State Park is a Pennsylvania state park in Perry and Slippery Rock Townships, Lawrence County, Pennsylvania in the United States. The park features a deep scenic gorge with the restored watermill and a covered bridge at the bottom, accessible by a roadway that winds between large, room sized boulders on the hillside. McConnells Mill State Park is along the Slippery Rock Creek. just southwest of the intersection of US 422 and US 19. McConnells Mill State Park was chosen by the Pennsylvania Department of Conservation and Natural Resources (DCNR) and its Bureau of Parks as one of "25 Must See Pennsylvania State Parks".

Daniel Kennedy opened a gristmill on Slippery Rock Creek in 1852. The mill was destroyed by fire in 1868 and was quickly rebuilt. Ownership of the mill was transferred to the park's namesake, Thomas McConnell in 1875. He replaced the waterwheel with water turbines and the grindstones with rolling mills. This made McConnell's Mill one of the first rolling mills in the country. The mill processed oats, corn, buckwheat and wheat until it was closed in 1928. Ownership of the land transferred from Thomas H. Hartman to the Western Pennsylvania Conservancy in 1942. The conservancy then transferred the land to the Commonwealth of Pennsylvania in 1957 when McConnells Mill State Park was formally dedicated.

The McConnells Mill Covered Bridge was built in 1874. It is a Howe truss bridge. One of two covered bridges in Lawrence County, it is owned by the county, but is located on state land at McConnells Mill State Park. The bridge is listed in the National Register of Historic Places.

There are several trails in the park, including a pair that lead to a waterfall (with an old limestone kiln next to it). The trail system is part of the North Country Trail, the nation' longest National Scenic Trail which runs from North Dakota to New England. There are two climbing/rappelling areas. Both are only recommended for "equipped and experienced climbers". The more difficult of the two is at Breakneck Bridge. Alpha Pass Trail is a "moderate" 1.5 mile (2 km) hiking trail that is marked with blue blazes. The trail is part of the North Country Trail. The section in the park begins at the Alpha Pass scenic view. It then runs along the east bank of Slippery Rock Creek to the Old Mill.