Bilger's Rocks is a park in Clearfield County, Pennsylvania, USA, near the town of Grampian in Bloom Township. The surrounding area is intricately laced with hills, mountains, and river valleys that generally follow the Appalachian mountain range in a northwest to southeast direction. The area of the park is located along the Allegheny section of the mountains, approximately 8 miles (13 km) southwest of the highest point on Interstate 80 east of the Mississippi River.