Mountain Ash railway station is a railway station serving the town of Mountain Ash in Rhondda Cynon Taf, Wales. It is located on the Aberdare branch of the Merthyr Line. It is also located on the banks of the Afon Cynon, a major river in the town of Mountain Ash. A station serving this area of the town was first opened at Oxford Street by the Taff Vale Railway in 1888. This was closed to passengers by the Western Region of British Railways in 1964. Passenger services were reinstated to a new station by British Rail in 1988. There is a passing loop situated here, which allows a half-hourly service to operate and freight trains to operate alongside the passenger service on what is otherwise a single track route.Passenger services are provided by Arriva Trains Wales and run to all Valley Lines destinations.ServicesMonday to Saturday daytimes trains run half-hourly each way, north to and south to, Cardiff Queen Street and. They then continue to and, though a limited number of peak & late evening services run to. The frequency drops to hourly in the evening & every two hours each way on Sundays.