Snowdonia is one of the three National Parks in Wales. The National Park covers 823 square miles of the most beautiful and unspoilt countryside in north west Wales. From Snowdon in the north to Cadair Idris in the south, the area was influenced by the Ice Ages and has numerous classic glacial features. The Dwyryd, Mawddach and Dyfi Estuaries, and 23 miles (37 kilometres) of coastline also contribute to the excitingly varied landscapes which are home to a wide range of wildlife. Snowdonia is home to just under 26,000 people, who live and work in its towns and villages, and on its hill farms, and 62% of the people speak Welsh.