Nant Ffrwdwyllt Nant Ffrwdwyllt was a small tributary of the Afan, just under 8 km and joining the Afan close to the sea. It was diverted in the 18th century into the ironworks at what was to become Port Talbot, to provide a source of water. It remains diverted, flowing into Port Talbot Docks.
nant ffrwdwyllt nant ffrwdwyllt was a small tributary of the afan just under 8 km and joining the afan close to the sea it was diverted in the 18th century into the ironworks at what was to become port talbot to provide a source of water it remains diverted flowing into port talbot docks