Mason and Dixon Survey Terminal Point

The Mason and Dixon Survey Terminal Point is a boundary marker located on Browns Hill at the Pennsylvania-West Virginia border. It marks the westernmost position reached during the survey of the Mason-Dixon line.

The marker was established in 1767 by surveyors Charles Mason and Jeremiah Dixon after they stopped their western progress at this location. The current stone was placed by Cephas H. Sinclair in 1883 directly on the original mound.

The terminal point represents the end of a boundary line that later defined geographical divisions between northern and southern states in America.

The site is located northeast of Pentress along County Route 39 in West Virginia and is straightforward to reach. The coordinates are 39.721111, -80.118611 for precise navigation to the marker.

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: December 12, 2025 12:00