Llyn Gwynant is one of Snowdonia's larger lakes lying at a height of 217 feet above sea level. It's ⅘ mile long, about 400 yards wide and 50 feet deep. Fed by the Afon Glaslyn, it's very popular for swimming, paddle-boarding 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 Gwynant 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 across from the A498 if you fancy a swim and the lower parts are popular for diving and jumping. Alternatively a well-used but salebrous footpath runs from the rear of the campsite along the lake's north shore. Elephant rock is a good place to sit and admire the views by day, or the stars at night.
