You searched for: Place Allegheny National Forest, Corydon Township. Along Forest Rd. 452 at head of Schoolhouse Hollow, off Penna. HWY 321 (Allegheny Scenic Drive), ca. 10 miles WSW of Bradford. Remove constraint Place: Allegheny National Forest, Corydon Township. Along Forest Rd. 452 at head of Schoolhouse Hollow, off Penna. HWY 321 (Allegheny Scenic Drive), ca. 10 miles WSW of Bradford.