The Viaducts at Edwardsville.

The one in the foreground is on the Vale Of Neath Railway connecting Quakers Yard High Level with Mountain Ash through the Cefn Glas Tunnel. The viaduct in the background is on the Rhymney Railway/Great Western Joint Line linking Quakers Yard High Level with Aberfan, Abercanaid and Merthyr. The lattice work in the arches of the viaduct was not by design.It was put in to prevent the viaducts collapsing because of mining subsidence from Deep Navigation workings underneath. Notice the track of the Penydarren Tramroad in the bottom right of the picture.

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