Well my favourite well is St.keyne's in Cornwall. The well has all that beautiful mossy greenness, ferns clinging vertically, lichen lined stones that speaks of that dampness of water. It is not too far from Duloe stone circle, (about a mile?) quartz crystal stones like a crown upon the land. St.Keyne's is also on TMP, and has it saint's story which of course could have trickled down from much earlier times, considering her time of 5th century date.