Tag:boundary=marker
 boundary = marker
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_-_geo.hlipp.de_-_39071.jpg) |
| Description |
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A physical marker that identifies a boundary 
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| Group: Boundaries |
| Used on these elements |
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| Useful combination |
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| See also |
| Status: in use |
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| Tools for this tag |
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| Wikidata |
| Q921099 |
A 
boundary marker, border marker, boundary stone, border stone, boundary tree, is a robust physical marker that identifies the start of a land boundary or the change in a boundary, especially a change in direction of a boundary.
Boundary markers, traditionally, were often made of stone, but later many have been made with concrete or a mixture of materials. They are typically placed at a notable or especially visible point. Many are inscribed with relevant information such as the abbreviation of the boundary holder and often a date.
The word "Boundary marker" is 'all-encompassing', because a boundary_stone is a boundary_marker, but not all boundary_markers are in stone. Also, there are boundary trees.
How to map
Set a node 
and add boundary=marker.
If a boundary marker is historic, one can simply add historic=yes .