Corryvreckan Whirlpool, Argyll, Scotland
"It gets its name from the `cauldron of the plaid’ ..said to be where the Cailleach washes her plaid spreading it out over the mountains to dry … hence the heralding of the first winter snow…
The Corryvreckan, the remarkable whirlpool on the west coast of Scotland between the islands of Scarba and Jura, is said to be where the Cailleach washed her plaid (traditional garment of the Highlands, generally tartan) in late autumn and then spread it out over the mountains to dry.
As she was the oldest creature her plaid was pure white: so the story explains both the period of heaviest activity of the whirlpool and the first serious snow fall of the year.”
Source and more information at: http://matarikidimension.wordpress.com/2011/11/22/corryvrekan-and-the-cailleach/