Mason and Dixon Survey Terminal Point

Mason and Dixon Survey Terminal Point is a historic marker located near Core, West Virginia, and Mount Morris, Pennsylvania, United States. Located on the boundary between Monongalia County, West Virginia, and Greene County, Pennsylvania, it identifies the terminal station established by Charles Mason and Jeremiah Dixon on Brown's Hill, the westernmost point of the survey by Mason and Dixon, preserved as part of Mason-Dixon Historical Park.The surveyors took astronomical observations and on October 19, 1767, finally established the point on Brown's Hill.

Source: Wikipedia — Mason and Dixon Survey Terminal Point (CC BY-SA 4.0)