Park at the car park by Llanelltyd bridge and walk up to the ruins of Cymer Abbey. Just before the Abbey, there is a gate on your left which follows the river through a couple of gates and a stile (in the fence on your left after about half a mile).
You can follow it to the end and climb over the stile and up a steep bank to end up on a quiet road which leads back to Llanelltyd.
Cymer Abbey, Llanelltyd. Founded in 1198 by Maredudd ap Cynan for the Cistercian order Afon Mawddach near Cymer Abbey, Dolgellau The River Mawddach near Cymer Abbey in Autumn The River Mawddach near Cymer Abbey in Autumn Near Cymer Abbey, Llanelltyd Cymer Abbey, Llanelltyd. Founded in 1198 by Maredudd ap Cynan for the Cistercian order Afon Mawddach near Cymer Abbey, Dolgellau The River Mawddach near Cymer Abbey in Autumn