Mason and Dixon Survey Terminal Point
Mason and Dixon Survey Terminal Point, Boundary marker at intersection of Monongalia County and Greene County, United States.
The terminal point marks the westernmost location reached during the Mason-Dixon survey, situated on Brown's Hill at the Pennsylvania-West Virginia border.
In 1767, surveyors Charles Mason and Jeremiah Dixon established this point after receiving instructions from Native Americans not to proceed beyond the Catawba Trail.
The terminal point represents the end of a boundary line that later defined geographical divisions between northern and southern states in America.
Visitors can locate this historical marker northeast of Pentress on County Route 39 in West Virginia at coordinates 39.721111, -80.118611.
The current stone marker, placed by Cephas H. Sinclair in 1883, stands in the exact mound left by Mason and Dixon in 1767.
Location: West Virginia
Location: Pennsylvania
Part of: political border
GPS coordinates: 39.72111,-80.11861
Latest update: September 23, 2025 14:24
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