Survey marker

Survey markers are world objects $$

Background
Permanent and embedded disks placed to mark key survey points, placed before the Great War by the United States Geological Survey. A total of five markers can be found in Appalachia, each labeled with a name, unique number, and instructions to contact the director of the agency in Washington, D.C. for more information.

Behind the scenes

 * The survey markers in were created by world artist John Valenti.
 * The benchmarks are based on real-world survey markers, part of a national database maintained by the National Geodetic Survey (NGS), successor agency to the U.S. Coast and Geodetic Survey (USCGS).