OS Benchmark - Cut Mark: Gwernymynydd, Hafod Road, Bryn Glas
Introduction
The photograph on this page of OS Benchmark - Cut Mark: Gwernymynydd, Hafod Road, Bryn Glas by Col Blanchard as part of the Geograph project.
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NEW Image: © Col Blanchard Taken: 20 Sep 2026
This is a cut benchmark on the face of a brick pillar on Bryn Glas. It's 0.5 m above the ground and 216.4385 m above the Ordnance Datum at Newlyn. It was last verified in 1968,
