NPRN505711
Cyfeirnod MapSH56SE
Cyfeirnod GridSH5574560464
Awdurdod Unedol (Lleol)Gwynedd
Hen SirSir Gaernarfon
CymunedLlanberis
Math O SafleTWNNEL TRAMFFORDD
CyfnodÔl-Ganoloesol
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Disgrifiad
Tunnel entrance into Chwarel Cefn Du quarry (NPRN 400667). The tunnel is unroofed on the eastern end where it can be accessed and the cutting is mostly filled with spoil. P.J. Schofield, OANorth, 26th June 2007