Snowdonia is a mountainous region in northwestern Wales and a national park of 823 square miles (2,130 km2) in area. It was the first to be designated of the three national parks in Wales, in 1951.
The English name for the area derives from Snowdon, which is the highest mountain in Wales at 3560 ft (1,085 m). In Welsh, the area is named Eryri.
The northernmost area is the most popular with tourists, and includes (from west to east) Moel Hebog, Mynydd Mawr and the Nantlle Ridge; the Snowdon Massif; the Glyderau; and the Carneddau. These last three groups are the highest mountains in Wales, and include all Wales' 3000-foot mountains.