Llyn Dinas lies in the Nant Gwynant valley and offers one of the most picturesque places to get on the water in Snowdonia. It's often used for paddleboarding, canoeing, and wild swimming, with easy access from the small car park at the shoreline. The lake is surrounded by walking routes and is close to the Watkin Path up Snowdon. Calm and sheltered, it's a relaxing spot with stunning mountain views.