Hell’s Hollow Trail:
.4 miles (one-way), Easy
Trailhead: Hell’s Hollow Parking Lot
A scenic trail that follows the narrow and rocky Hell’s Run downstream to the wide and consistently flowing Hell’s Hollow Falls and an abandoned lime kiln. This trail is a great place to view wildflowers during the spring months

Kildoo Trail:
1 mile, easy
Trailhead: Old Mill (Center of Park)
The Kildoo Trail begins just south of the Old Mill at the center of the park and follows Slippery Rock Creek downstream and the 20-foot Kildoo Falls.

Slippery Rock Gorge Trail
6.30 miles, Moderate to Difficult
Trailhead: Hell’s Hollow Trailhead
Part of the 5200-mile North Country Scenic Trail, the Slippery Rock Gorge Trail begins by descending through Hell Run for two miles then travels up the Slippery Rock Gorge for 4 miles to Eckhart Bridge. This is a one-way trail, so plan at least 6 hours to hike if going out and back.

Alpha Pass Trail
1.20 miles, Difficult
Trailhead: Alpha Pass Scenic Vista
This trail begins at the Alpha Pass Scenic Vista and descends to the Slippery Rock Creek and follows the creek upstream along its eastern bank. The trail also provides access to the 60-foot Alpha Falls, one of the tallest waterfalls in Western Pennsylvania. 

Size: 2,546 acres
Address: 2697 McConnell’s Mill Road, Portersville, PA
Attractions: Historic Mill and Covered Bridge, Waterfalls, Overlook, Hiking Trails, Picnic Areas

McConnell's Mill State Park

Breakneck Falls in McConnell's Mill State Park

McConnell’s Mill State Park is one of the most highly regarded and scenic parks in Western Pennsylvania and is located less than 35 minutes from the OH-PA border. The park preserves the Slippery Rock Gorge and Hell’s Hollow, a tributary stream that flows through a narrow gorge and over a beautiful waterfall. Perhaps the most scenic spot in the park is Cleland Rock, a large rock outcropping the sits atop the rim of the gorge and gives you a great view of the valley below. Part of the famous North Country Trail passes through the park, which will span 8 states and 5200 miles upon its eventual completion. At the center of the park is McConnell’s Mill: the historic mill for which the park was named.