Workers from the Washington Suburban Sanitary Commission place a 10" square cement marker with a circular 3 1/2" diameter metal disk on Post 28 property. They designate this as the highest point in Prince George's County. The compass bearings are southwest of the edge of the driveway and 9' northwest of Powdermill Road. On the disk is written "Azimuth Mark U.S. Coast & Geodetic Survey." National Geodetic Survey has no record of this marker.
highest point in Prince George's County
