Mynydd Perfedd is a mountain in Snowdonia

Snowdonia

Snowdonia is a region in north Wales and a national park of in area. It was the first to be designated of the three National Parks in Wales, in 1951.-Name and extent:...

, Wales

Wales

Wales is a country that is part of the United Kingdom and the island of Great Britain, bordered by England to its east and the Atlantic Ocean and Irish Sea to its west. It has a population of three million, and a total area of 20,779 km²...

, forming part of the Glyderau

Glyderau

The Glyderau are a mountain group in Snowdonia, North Wales. The name derives from the highest peaks in the range, Glyder Fawr and Glyder Fach....

. The summit has a shelter cairn, offering good views of Foel-goch's north-eastern face, and the Carneddau

Carneddau

The Carneddau , are a group of mountains in Snowdonia, Wales. It includes the largest contiguous areas of high ground in Wales and England, as well as six or seven of the highest peaks in the country—the Fourteen Peaks...

.

Between it and Carnedd y Filiast, there are dramatic cliffs to the east, including the famous Atlantic Slab. To the south lies the parent peak Elidir Fawr

Elidir Fawr

Elidir Fawr is a mountain in Snowdonia, north Wales, the northernmost in the Glyderau. To the north of the summit is a small lake, Marchlyn Mawr, which is the upper reservoir for Dinorwig power station, a pump-storage power station hidden inside the mountain itself. The lower reservoir is Llyn Peris...

, to the west Carnedd y Filaist and to the east Foel-goch and Y Garn

Y Garn (Glyderau)

Y Garn is a mountain in Snowdonia, North Wales, part of the Glyderau.It is one of the Welsh 3000s — the 15 summits in Wales over 3,000 ft in height. It is the tenth highest peak in Wales. Moderate snow accumulations can take place on the western slopy side of the mountain from October to...

. It is 812 metres (2,664 ft) high. The average annual temperature of the mountain is about 5 celsius.