
Kinzua Gorge and the rugged valley of Kinzua Creek dominate this landscape within the Allegheny Plateau. The area is defined by its deep-cut drainages and historical oil-and-gas infrastructure, visible in the winding routes of Smethport Ormsby Rd and Rte 646. Small communities like Cyclone, Ormsby, and Gifford are connected by a network of ridgeline roads such as Summit Rd, reflecting a settlement pattern dictated by the steep hollows.
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1924 · Bradford
USGS Topo · 1:62,500
1926 · Bradford
USGS Topo · 1:62,500
1933 · Smethport
USGS Topo · 1:62,500
1935 · Mt. Jewett
USGS Topo · 1:48,000
1937 · Smethport
USGS Topo · 1:62,500
1940 · Mt. Jewett
USGS Topo · 1:62,500
1941 · Bradford
USGS Topo · 1:62,500
1944 · Bradford
USGS Topo · 1:62,500
1948 · Crosby
USGS Topo · 1:62,500
1948 · Crosby
USGS Topo · 1:24,000