Pen-Y-Garreg Dam and Valve Tower
Uploader's Comments
The masonry pegs jutting out from the face of the dam wall were originally used to support the timbers carrying the railtrack, built to get the large stones to the top of the dam.
This dam is unusual in that it has an access tunnel to the central tower which is lit by apertures in the side of the dam running along the top
Uploaded by Karen Lee on 11 June 2013
