Llanfachreth is a settlement some three miles north-east of Dolgellau (its post town) within the historic boundaries of Merionethshire (Welsh: Meirionnydd, Sir Feirionnydd., Wales. The village is on the slopes of the valley of the river Mawddach and at the foot of Moel Orthrwm. To the south-west on another prominent hill, the Foel Cynwch,is the famous Precipice Walk.