Fyfnnon Fawr

'Our Lady's Well'

A spring that lies below Arthur's Stone at Cefn-y-Bryn, near Reynoldstone, Gower, Wales.

The waters of this spring are supposed to run according to the ebb and flow of the nearby sea. The water used to be drunk from the palm of one hand while a wish was made. It is said that the spectral figure of King Arthur appears from beneath the stone on nights with a full moon, though this seems to be true about almost all the many stones associated with Arthur.