Cwellyn Arms Campsite sits on the shore of Llyn Cwellyn in the village of Rhyd Ddu, Snowdonia, owned and operated by the adjacent Cwellyn Arms pub.

The vehicle-free site occupies an exquisite position between lake and forest, with trolleys provided to move gear and a wooden walkway leading to pitches closest to the water's edge.

Campfires are permitted in supplied fire pits, and only kiln-dried logs purchased on site may be burned. Dogs are welcome. Facilities include a modern amenity block open around the clock, featuring showers and toilets, along with laundry and drying rooms.

The site is music-free and serves as a convenient base for the Snowdon Ranger Path up Snowdon. The lake itself offers a bracing swim in notably clear water.