Tag:historic=boundary_stone
 historic = boundary_stone
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| Description |
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A historic physical marker that identifies a historic boundary  
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| Group: historic |
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| Status: de facto |
| Tools for this tag |
A historic=boundary_stone [1] is a robust historic physical marker that identifies a certain point of a historic land boundary, especially a change in the boundary direction. They have often been used to mark boundaries between countries or local administrations but also to mark out the limits of private land-holdings especially in areas where fences or other kinds of barriers are impractical or unnecessary.
Boundary stones may be placed at notable or especially visible points but can also be found in remote places, hidden in shrubbery or woods. Many are inscribed with relevant information such as the abbreviation of the boundary holder, a consecutive number and the year when they were set up. Stones in prominent locations may also feature a code of arms or a metal plaque.
Historic boundary stones are often found along boundaries which are still in effect today, as well as in places where no boundary exists nowadays. This does not make any difference in the use of the tag historic=boundary_stone which reflects the historic character of the boundary stone only, not of the boundary itself. An actual boundary may well be marked by a mix of historic and recent stones. For such recent boundary stones use boundary=marker + marker=stone.
How to map
Set a node 
at the exact position of the boundary stone and add historic=boundary_stone. In case the historic stone is related to a boundary still in effect today, the node must not be merged with ("glued" to) a node of the boundary relation because border stones are physical objects and boundaries are not. In such cases place the node of the stone on top of the way of the boundary relation but do not be merge it. To do so with the iD editor just move the node of the stone with your mouse to the correct location of the boundary way until it snaps in, then press the ALT key and release the mouse button.
Related forum discussion: [2].
Optional tags
name=*
inscription=* - inscriptions on different sides of the marker could be separated by a sign "/"
year=#### (year) (or documented tag start_date=*)
moved=yes - indicates that the marker is not on its original position
format=* - describes the shape of the marker
format:top=* - describes the shape of the marker's top
height=* - height of the marker
collection=yes - the marker is a part of the collection of historical markers
ref=* - the number written on the marker
old_ref=* - the (old, changed) number written on the marker
material=*
Similar tags
For so-called historic milestones look at
historic=milestone
For so-called modern milestones look at
boundary=marker
highway=milestone - Proposed features/Milestones
railway=milestone
waterway=milestone
See also
- Here you can find a JOSM template - User:Lübeck/JOSM Template Milestone BoundaryStone
boundary=historic