Tuath Glas Cu (dear green place) in the Kingdom of Alba in Scotland is one of three most-sacred wells of the Isle of the Mighty, or the British Isles, as they are known by mortals.
Tuath Glas Cu: The Barren Pool of Scotland[]

A few years ago Dr. Erskine stepped on a loose marble slab on the floor of his office while working late one night at the Sterling Institute for Folklore Quantification. It concealed a cramped, stone-lined passage. Grabbing a torch, the doctor walked the serpentine tunnel. It opened into a huge, low-vaulted chamber. The room was round and its limestone flagstones were inscribed with a smaller circle, which outlined a pool. The Cavern looked like a Roman bath, except its sides were not inlaid with stone, but were formed by packed earth. At the nadir of the pool was a deep fissure.
Curious, Dr. Erskine stepped into the pool and walked to its center. For some reason he was moved to tears. He cried for a time, his hands clutching the sides of the crevasse, until he felt water lapping at his fingertips, welling up from depths. Startled, he leapt to his feet and there, beside him, was Edward Buchanan one of his students. Edward was changed, covered in green leaves. Calum felt humiliated and betrayed to be found crying by one of his students. It didn't matter that Edward was crying as well. Dr. Erskine beat him unconscious and left him there. The great well of Caledonia has gone dry.
The Other Wells[]
References[]
- CTD. Isle of the Mighty, p. 101.