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Public-images-osm logo.svg historic = boundary_stone
Boundary stone Maesglase.jpg
A historic physical marker that identifies a boundary Edit or translate this description.
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
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 "historic" milestones look at

for "modern" milestones look at
highway=milestone - Proposed_features/Milestones

See also