SH6281650678 From the car park turn left on the road and head to the well signposted start of the Watkin Path about 50m along on the opposite side of the road to the car park. Follow the track and then take the path up through woods. The path eventually rejoins the 4x4 track just before it makes a sharp left turn. Shortly after this the track starts to head around to the right around a bowl feature and crosses the prominent disused incline near its base. It then comes above some pools on the Afon Cwm Llan, where a path branches off to the right and crosses the river on a stone bridge - this is the eventual turn off on the descent. For now stay on the track and walk up to the mouth of Cwm Llan to a hydro dam.

SH6211852008 From close to the dam take the first left turn up a path, almost heading straight up the hill. Ignore the right turn along another track and instead carry on up the hillside following a faint path that heads up past some ruined buildings and a disused quarry working to eventually reach the main ridge of Yr Aran close to the 528m spot height, by a drystone wall.

SH6143551515 Follow the drystone wall along the ridge in a fairly straight line to where the wall kinks left. After about 250m you need to leave the drystone wall and follow the ridge on the left to the summit of Yr Aran.

SH6044851511 The extension to Craig Wen is entirely optional: Carry on over Yr Aran in the same direction and follow the ridge down to a col, and then continue along the ridge to Craig Wen.

SH5941950567 About turn here and retrace your steps to the col. Head back up towards Yr Aran, and after an initial altitude gain of 20m head over to the left of the ridge to gain a rounded spur, about 250m away from the col.

SH5997451419 Contour across the hillside over the top of two small spurs after 150m and 200m respectively. Carry on in the same direction until you can start heading down a ridge to Bwlch Cwm Llan.

SH6052952140 At the Blwch turn right and follow some stone steps down from the ridge to a prominent path that then traverses slightly down but more across the hillside, before it finally reaches the quarry track. Turn right here and follow the track to rejoin your route from earlier at a junction where a path heads down a gully.

SH6188051893 Turn right and reverse your previous steps. At the main 4x4 track turn right past the hydro dam. Walk for 400m down the main track to a small path on the left that crosses the Afon Cwm Llan via a picturesque stone bridge.

SH6223351634 Head down the path and across the bridge before ascending briefly to a drystone wall. Turn right and follow a faint path down the side of the river to where you get penned in by a tributary coming in from the left. To the right is a bridge across the Afon Cwm Llan.

SH6293551362 Cross the bridge and follow the road through the small farming hamlet and campsite area to reach the track that the Watkin path heads up, and walk back to the car park.