Llyn Llydaw

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Llyn Llydaw
Llyn Llydaw.jpg
Llyn Llydaw seen from the summit of Snowdon
LocationSnowdonia National Park, Wales
Coordinates53°4′7″N 4°2′50″W / 53.06861°N 4.04722°W / 53.06861; -4.04722Coordinates: 53°4′7″N 4°2′50″W / 53.06861°N 4.04722°W / 53.06861; -4.04722
Lake typenatural, reservoir
Basin countriesUnited Kingdom
Surface area110 acres (45 ha)
Surface elevation436 m (1,430 ft)

Llyn Llydaw (from the Welsh meaning Brittany lake) is a natural lake in Snowdonia National Park on the flanks of Snowdon, Wales' highest mountain. This long thin lake has formed in a cwm about one-third of the way up the mountain.

It is one of the most visited lakes in the United Kingdom. Thousands of people every year visit Snowdon and many walk past this lake on the Miners' Track.

Llyn Llydaw is the largest of the three lakes on Snowdon's eastern flank. Higher up lies Glaslyn, and lower down lies Llyn Teyrn.

The lake featured in Robson Green's Wild Swimming Adventure (ITV December 2009), chosen because it is allegedly the coldest lake in Britain. Green's website[1] states that the water was 7 degrees Celsius, but other Welsh lakes are often colder than this.


  1. ^ "Archived copy". Archived from the original on 2009-12-22. Retrieved 2009-12-28.CS1 maint: Archived copy as title (link) Robson Green website

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