It is found at approximately 600 metres (2,000 ft) above sea level in a cwm on the eastern flanks of Snowdon.

Arthur's men then retreated to a cave on the slopes of Y Lliwedd, where they are said to sleep until such time as they are needed.

[4][5] Merlin is supposed to have hidden the golden throne of Britain among the cliffs north of Crib y Ddysgl when the Saxons invaded.

[6] Glaslyn was also the final resting place of a water monster, known as an afanc (also the Welsh word for beaver), which had plagued the people of the Conwy valley.

They tempted the monster out of the water with a young girl, before securing it with chains and dragging it to Glaslyn.