Tread out the circles of the Grail . . .
From this cluster of huge rocky outcroppings it has long been believed that as many as eighty enormous stones were transported to Salisbury Plain to become part of Stonehenge more than 4,000 years ago.
They are mystical stones, and of a medicinal virtue . . . (they) make baths in them, when they should be taken with any illness. For their method was to wash the stones, and put their sick into the water, which infallibly cured them. With the like success they cured wounds also, adding only the application of some herbs. There is not a stone there which has not some healing virtue.