
Burnt Cabins and Fort Littleton anchor this mid-1960s study of the Ridge and Valley province, where the modern corridor of the Pennsylvania Turnpike cuts through a landscape defined by sharp mountain ridges. The geography is dominated by parallel summits such as Sideling Hill, Scrub Ridge, and Tuscarora Mountain, which hem in narrow valleys like Metal Valley. These gaps and notches have long dictated travel, with Interchange 13 and the historic Toll Road navigating the base of Sidneys Knob.
55 named features on this map. Tap any name to fly to it.
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1900 · Mercersburg
USGS Topo · 1:62,500
1902 · Mercersburg
USGS Topo · 1:62,500
1925 · Needmore
USGS Topo · 1:48,000
1930 · Broad Top
USGS Topo · 1:62,500
1933 · Broad Top
USGS Topo · 1:62,500
1935 · Needmore
USGS Topo · 1:62,500
1939 · Needmore
USGS Topo · 1:62,500
1939 · Orbisonia
USGS Topo · 1:62,500
1940 · Orbisonia
USGS Topo · 1:62,500
1942 · Hagerstown
USGS Topo · 1:125,000