Pontwalby viaduct Pontwalby viaduct Pontwalby viaduct Merfyns Memory Trail... Mine Adit A Cwm Gwrelych waterfall Tramway sleepers Rhigos Mountain A Coal Seam Cwm Gwrelych waterfalls A view over Pontneddfechan Brickyard Chapel Neath Valley Gliding Club A wild place Opencast mining Pontwalby iron bridge Fallen Tree Platform remains From the viaduct Under the bridge Downstream Sun rays over the church Riverside houses Pencaedrain Tunnel Pencaedrain Tunnel approach Pencaedrain Tunnel Pencaedrain Tunnel Pencaedrain Tunnel Walk Map The Whistle Inn Light The Chimney The Chimney Capped Shaft Iron Horses Pwll du Tunnel Derelict Blast Furnaces Iron Bridge Blanket Church Schoolhouse Overview Bricked up Circular