The Cegin valley was heavily industrialised in the eighteenth and nineteenth centuries with two separate railway lines conveying slate from quarries in the hills down to Porth Penrhyn to be shipped out to destinations across the world. Much evidence of this still remains with one of the old railway beds now used as the Lôn Las Ogwen cycle-way and footpath. Just above Port Penrhyn a series of closely connected old bridges cross the Cegin. This complex is a listed building.
|This Gwynedd location article is a stub. You can help Wikipedia by expanding it.|