Before it was a national park, the name "Snowdonia" was used to describe "Snowdon," a small area north of Gwynedd. Today, the national park covers an area that is two times larger than the area originally called Snowdonia. The park covers areas as far south as Meirionnydd. The original Snowdonia includes Snowdon, and three other mountain ranges: the Glyderau, the Carneddau and the Moel Siabod group. The hills that are south of Maentwrog are not part of the original Snowdonia.