Allegheny Front Section
Appalachian Plateaus Province


Allegheny Front Section showing geology and shade relief

The Allegheny Front Section to the east consists of rounded to linear hills, which are cut by narrow valleys and rise in a stepwise fashion to an escarpment. West of the escarpment, undulating hills slope away. Sandstone, siltstone, and shale are the underlying rock types.

The Section occurs in south-central and central Pennsylvania and includes parts of Bedford, Somerset, Blair, Cambria, Clearfield, Centre, and Clinton Counties.

Scenic routes along this Section include Interstate 76 (Pennsylvania Turnpike) from the east boundary into Somerset County, Interstate 99, which provides a good view of the escarpment to the northwest, and US Route 322 crosses the Section from Port Matilda to Philipsburg. Route 22 also crosses the Section from Altoona to Cresson.

Outstanding Geological Scenic Features in the Section include Blue Knob, Central City Vista, Glade Pike Vistas, Horse Shoe Curve, Hunter Rocks, Prince Gallitzen Spring, Spring Meadow Spring, Sandstone Quarry - Allegheny Portage Railroad, Turtle Rocks, Wolf Rocks, and Wopsononock Lookout.

State Parks in the Section are: Blue Knob, Black Moshannon, Bald Eagle, and Shawnee.