This outstanding family-friendly route up the Afon Lwyd valley is a traffic-free railway trail through former mining country. From the Monmouthshire Canal towpath at Cwmbran, it heads towards Blaenavon on a wide, paved path with excellent views. The Big Pit Mining Museum and steam railway at Blaenavon both deserve an afternoon of your time. The route now continues over the hill, still traffic-free, to Brynmawr where it meats the Heads of the Valleys route (NCN 46).