At ⅘ mile long and about 400 yards wide, Llyn Gwynant is one of North Wales's larger lakes. Fed by the Afon Glaslyn, it's very popular for swimming and kayaking. The A498 runs along the south side, and some space for parking is available. There is a small 'beach' area, here and on a hot day the temptation for a swim is irresistable. At the eastern end of the lake is the Llyn Gwnant campsite, which has a good-size 'beach' area. Because of its idyllic location it's very popular, and at night the smoke from camp-fires and barbecues fills the air.
On the north side of the lake, Elephant Rock protrudes into the lake. It's about 360 yards from the A498 if you fancy a swim, or alternatively a good footpath runs from the (rear of) the campsite along the lake's north shore. The rock is a good place to sit and admire the views by day, or the stars at night.