Cwm Ebol tramway
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Cwm Ebol quarry as seen from pathway continuing up the valley, possibly doubling as access ramp for the middle level.
(click image to enlarge)
References
"The Slate Railways of Wales", Alun John Richards, pub. 2001 Gwasg Carreg Gwalch [Cymraeg] [English] ISBN 0-86381-689-4