Llyn Glaslyn, which is Welsh for blue lake, is situated in a cwm on the eastern flanks of Snowdon at a height of around 600 metres. The lake is a rough ellipse in shape.
Llyn Glaslyn is the source of the River Glaslyn, which runs east to Llyn Llydaw before turning southwest to reach the sea at Porthmadog. The lake can be reached via the Miners Track which leads up to Snowdon.
A walk to Llyn Llydaw and Llyn Glaslyn
Distance - 8.7 km
Duration - around 4 hours
*Commencing at the car park at Pen-y-Pass on the A4086, proceed west along the popular PYG (Pen y Gwryd) path, to reach the pass of Bwlch y Moch, high above Llyn Llydaw. There are superb views of Snowdon from this path and across to Lliwedd on the left, and up to Crib Goch and Crib y Ddysgl on the right.
*Proceeed straight on, ignoring the Crib Goch path to the right. Upon reaching a point where the path veers to the right, where Llyn Glaslyn (Welsh for Blue Lake) is visible below, leave the PYG path and continue west down the steep grass slope.
*Join the Miner's Path by the shores of the lake and continue right until reaching some ruined buildings. Retrace your steps, following the shore of Llyn Glaslyn, then descend to follow the north west shore of Llyn Llydaw, before proceeding south east across the Causeway.
*Continue in an easterly direction on the track past Llyn Teyrn, then bear north to return to Pen y Pass and the car park.