 Surf Snowdonia, the world's first commercial artificial surfing lake, is located in Dolgarrog on the site of the old aluminium factory.Believed to have been established around 1200 AD, Dolgarrog is said to have got its name from a flying dragon called Y Garrog.This mythical beast preyed on livestock and Dolgarrog (The Garrog's meadow) was the favourite meadow on which it swooped down from the heights above to carry off sheep.