 Nant Ffrwdwyllt

Nant Ffrwdwyllt (sometimes known as Nant Cwm Farteg) is a stream that runs through Cwm Dyffryn, within the county borough of Neath Port Talbot, Wales, from the village of Bryn, through the village of Goytre and the district of Taibach in Port Talbot, to the sea.The stream was originally a tributary of the River Afan but was diverted in the 18th century into the ironworks at what was to become Port Talbot to provide a source of water.