 Leonard Harrison State Park lies on the east side of the Pine Creek Gorge , also known as the Grand Canyon of Pennsylvania . A sister park , Colton Point State Park , is on the west side , and the two parks combined form essentially one large park that includes parts of the gorge and creek and parts of the plateau dissected by the gorge . Pine Creek has carved the gorge nearly 47 miles ( 76 km ) through the dissected Allegheny Plateau in northcentral Pennsylvania . The canyon begins in southwestern Tioga County , just south of the village of Ansonia , and continues south to near the village of Waterville in Lycoming County . The depth of the gorge in Colton Point State Park is about 800 feet ( 240 m ) and it measures nearly 4 @,@ 000 feet ( 1 @,@ 200 m ) across . 
