Llyn Padarn is a glacially formed lake in Snowdonia, Gwynedd, North Wales, and is an example of a moraine dammed lake. The lake is approximately 2 miles (3.2 km) long and at its deepest point is 94 feet (29 m) deep, and is one of the largest natural lakes in Wales. At its south-eastern end it is linked to the neighbouring Llyn Peris. The busy village of Llanberis lies on the southern banks of the lake.