OS benchmark - Vyrnwy, buttress of dam
Introduction
The photograph on this page of OS benchmark - Vyrnwy, buttress of dam 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.
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OS benchmark - Vyrnwy, buttress of dam
Image: © Richard Law Taken: 4 Jul 2017
An OS cutmark at the western end of the dam; most recently levelled in 1955 at 256.462m above Ordnance Datum Newlyn, but originally levelled when the dam was built at 841ft 5in above sea level (and shown at that height on maps of the early 1900s)
Images are licensed for reuse under creativecommons.org/licenses/by-sa/2.0
Image Location
Latitude
52.76134
Longitude
-3.458837