OS benchmark - Betws-y-Coed milestone
Introduction
The photograph on this page of OS benchmark - Betws-y-Coed milestone by Richard Law as part of the Geograph project.
The Geograph project started in 2005 with the aim of publishing, organising and preserving representative images for every square kilometre of Great Britain, Ireland and the Isle of Man.
There are currently over 7.5m images from over 14,400 individuals and you can help contribute to the project by visiting https://www.geograph.org.uk

Image: © Richard Law Taken: 20 Apr 2023
Cut into the lower part of the Image, and last levelled in 1968 at 20.488m above Ordnance Datum Newlyn, this mark also appears on older maps at 66.9ft Liverpool datum.