 The gorge is also protected by the state of Pennsylvania as the 12 @,@ 163 @-@ acre ( 4 @,@ 922 ha ) Pine Creek Gorge Natural Area , which is the second largest State Natural Area in Pennsylvania . Within this area , 699 acres ( 283 ha ) of Colton Point and Leonard Harrison State Parks are designated a State Park Natural Area . The state Natural Area runs along Pine Creek from Darling Run in the north ( just below Ansonia ) to Jerry Run in the south ( just above Blackwell ) . It is approximately 12 miles ( 19 km ) long and 2 miles ( 3 km ) wide , with state forest roads providing all of the western border and part of the eastern border . 
