The Casselman River carves a deep path through the southern portion of this Somerset County landscape, defining the topography near the Casselman Gorge. The river valley serves as a primary corridor for regional infrastructure, carrying the CSX Transportation railroad line past the borough of Rockwood. This settlement is a central hub for the area, featuring the Rockwood Sch and a local Post Office near the water's edge. Further north, the terrain transitions into a patchwork of rural hamlets and agricultural lands, with small centers like New Centerville, Gebhart, and Kimmel connected by a network of local roads.
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1913 · Somerset
USGS Topo · 1:62,500
1915 · Somerset
USGS Topo · 1:62,500
1921 · Meyersdale
USGS Topo · 1:62,500
1922 · Confluence
USGS Topo · 1:62,500
1922 · Donegal
USGS Topo · 1:62,500
1931 · Confluence
USGS Topo · 1:62,500
1933 · Confluence
USGS Topo · 1:62,500
1935 · Donegal
USGS Topo · 1:62,500
1939 · Meyersdale
USGS Topo · 1:62,500
1944 · Somerset
USGS Topo · 1:62,500