Penllyn

Penllyn is the upland district around Llyn Tegid, the long lake beside Bala in northern Wales. Its valleys and pastures formed a medieval cantref, once part of Powys and later brought under the rulers of Gwynedd. The River Dee flows through the lake and continues eastward towards the border. Sheep farming and small settlements shaped the country around the water, beneath the hills that enclose the valley.