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Public-images-osm logo.svg historic = boundary_stone
Boundary stone Maesglase.jpg
A historic physical marker that identifies a boundary Show/edit corresponding data item.
Group: historic
Used on these elements
may be used on nodesshould not be used on waysshould not be used on areasshould not be used on relations (except multipolygon relations)
Useful combination
See also


Status: de facto

A  boundary marker, boundary stone, or border stone is a robust historic physical marker that identifies the start of a land boundary or the change in a boundary, especially a change in a direction of a boundary. They have often been used to mark critical points on boundaries between countries or local administrations but have also been used to mark out the limits of private land-holdings especially in areas where fences or walls are impractical or unnecessary.

Boundary stones 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.

How to map

Set a node node and add historic=boundary_stone.

Optional tags

inscription=* - inscriptions on the 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

Similar tags

For so-called historic milestones look at

For so-called modern milestones look at
highway=milestone - Proposed features/Milestones

See also