Welsh Valleys Maesteg and Tondu Lines The Mid Glamorgan RoutesWelsh Valleys Maesteg and Tondu Lines The Mid Glamorgan Routes by Vic Mitchell & Keith Smith The complex series of routes into the valleys are visited from east to west. The Ely Valley to Penygraig is first, followed by the branch to Gilfach Goch. The Ogmore Vale and the Garw Valley come next. A long journey north from Bridgend takes us close to the Llynfi River and on to Glyncorrwg. Finally, we run east from Port Talbot across high ground to Maesteg