Seneca Rocks stands as a prominent geological landmark where Seneca Creek meets the North Fork South Branch Potomac River in this part of Pendleton County. The landscape is defined by its deep gaps and high ridges, including Hinkle Gap and Harper Gap, which serve as natural corridors through the high terrain. Small settlements like Onego, Teterton, and Macksville are scattered along the river valley, connected by rural routes such as Smith Mtn Rd and Harper Gap Rd.
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1889 · Beverly
USGS Topo · 1:125,000
1892 · Beverly
USGS Topo · 1:125,000
1892 · Franklin
USGS Topo · 1:125,000
1896 · Franklin
USGS Topo · 1:125,000
1920 · Onego
USGS Topo · 1:62,500
1921 · Onego
USGS Topo · 1:48,000
1922 · Onego
USGS Topo · 1:62,500
1922 · Horton
USGS Topo · 1:48,000
1922 · Spruce Knob
USGS Topo · 1:48,000
1922 · Circleville
USGS Topo · 1:62,500