From Llandrindod, the line climbs steadily once more, skirting the Radnor Forest as it heads for the remote station at Llanbister Road (some 5 miles (8 km) distant from the village it is named after) and another summit near Llangynllo Tunnel, the highest point on the route at 980 feet (299 m) above sea level. There then follows a 4-mile (6.4 km) descent (again at mostly 1 in 60) to Knucklas, where the line is carried above the village on a 193-yd (176 m) viaduct with ornate castellated turrets at each end. It then heads to Knighton, where the station is in England but the town it serves is in Wales. The last portion of the route then runs through southwest Shropshire along the valleys of the River Teme & River Clun to join the main Shrewsbury to Hereford line at Craven Arms.