The Rhondda Line is a commuter railway line in South Wales from Cardiff to Treherbert. The line follows the Merthyr Line as far as Pontypridd, where it then diverges to continue along the Rhondda Valley. The places served by the line are listed below: * Cardiff city centre * Cathays * Llandaf * Radyr * Taff's Well * Treforest * Pontypridd * Trehafod * Porth * Dinas Rhondda * Tonypandy * Llwynypia * Ystrad Rhondda * Ton Pentre * Treorchy * Ynyswen * Treherbert