An easy 3-4 mile walk along two sides of a valley south of Myddfai.

Walk to the bottom of the village and carry straight on along the southbound road above the valley for about a mile. Look out for the entrance to Gellifelen on the right; go past it for a few metres, then turn right onto a track. Follow the track, through gates, all the way down until it ends at the entrance to a field.

From here, you'll cross the bottom of the valley, cutting across the field at a 45 degree angle from the left hand fence, towards a footbridge on the other side of the field (not the footbridge further to the left that leads to the farm). Keeping to the right of the fence, head straight up towards the woods. Just inside the trees you'll find a path: turn right and stay on the path, crossing a low fence near the farmhouse, and down onto the farm road. Follow the road back into Myddfai.