Concrete obelisk about 3' tall with no marking found in the woods near the north country trail in Yankee Springs recreation area, MI : r/whatisthisthing
Harrison Marker Company
Right of Way marker? - Benchmarking - Geocaching Forums
Survey marks | Business Queensland
Survey marker - Wikipedia
Survey Marker
Survey Marker on a cement pillar | Land surveying, Markers, Calligraphy art
Historic markers installed at lighthouse, museum
The Case for Making European Boundary Stones Into a World Heritage Site - Atlas Obscura
Geodetic Marker on cement pillar | Land surveying, Surveying equipment, Surveying