Conwy Area
Northern Region
Isle of Anglesey
The Carneddau and
the Glyderau

West Coast
South West
South East
Map and Satellite

Carneddau and

Carnedd Dafydd
Carnedd Llywelyn
Cwm Idwal
Glyder Fawr
Llyn Bochlwyd
Llyn Cowlyd
Llyn Eigiau
Llyn Ogwen
Ogwen Falls
Pen Yr Ole Wen

Llyn Cowlyd

Llyn CowlydThe Carneddau range of mountains encompasses a number of lakes in its deep valleys including bleak and treeless Llyn Cowlyd.

The lake is actually a reservoir providing water for the towns of Conway and Colwyn Bay and has a 30' dam at its north east end. Llyn Cowlyd is the deepest lake in Wales at 229 feet (70 metres) at its deepest point, measures two miles long by a third of a mile wide and lies at a height of of 1,164 feet (355 m) above sea level. The lake is home to Artic Char, a relic of the Ice Age, which was originally taken from Llyn Peris, in the Llanberis Pass, when that lake was drained during the construction of the Dinorwig Power Station.

According to 'The Mabinogion, an ancient Celtic text, carried down by oral tradition and written down in the fourteenth century Red Book of Hergest, the area was once rich in wildlife. In the story of Culhwch and Olwen, the giant Ysbaddaden sets Culhwch some difficult tasks in order to win the hand of his daughter Olwen in marriage. Culhwch enlists the aid of his cousin, King Arthur, to seek the lost Mabon, son of Modron, a number of mythical beasts are consulted, one of whom is the Owl of Cwm Cowlyd. The owl relates the history of the cwm, confirming that the valley was once wooded, but that the first clearing took place much earlier than mediaeval times.

Llyn Cowlyd can be accesed by road from Trefriw. The road, however, stops at a gate, which is about a mile from the lake itself, private vehicles are not permitted beyond the gate.

Image reproduced by permission of Derek Fogg at British Landscapes who retains all copyright)

A walk to Llyn Cowlyd from Capel Curig

The Glyderau

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