Llyn-y-Foel (Welsh: lake of the mountain) is a lake in Snowdonia, Wales approximately 240m across, 120m wide and up to 2m deep. It is at 535m altitude at the foot of the main ridge of Moel Siabod at grid reference SE2175035480.
The main outflow, at the south-east of the lake, forms one of the main tributaries of Afon Ystumiau, which eventually feeds into Afon Lledr and subsequently into Afon Conwy.
The deep brown colour of the water, caused by the peat in the immediate area, gives rise to a unique type of brown trout which can only be found in this lake. |