The brown stuff is mineral deposits (predominantly iron) bubbling up through the heated water.
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According to local legend, the ghost of a ‘Grey Lady’ once haunted the well. The lady, dressed in grey, is said to have beckoned a man collecting water from the well. As he approached she asked the man to ‘hold me tight by both hands’. The man obliged but his grip loosened. As he let go a stabbing pain caught him in the side, the Grey Lady complained his grip wasn’t tight enough and now she would remain a ghost for another hundred years. She vanished and has never been seen again ... or has she?
From the info board on site.
In Chris Barber’s “Mysterious Wales” (1982 David & Charles) he says that the well was famous for healing rheumatism and similar ailments.
It was reported that one child, who went there as a cripple, was able to throw away his crutches after a fortnight’s bathing and run about the green meadow on the riverside.
There is a possibility referred to in the GGAT SMR that Roman masonry was exposed around the well during a flood in 1799.
This suggests that the well may have been in use during prehistoric times and reused by the Romans.
It is the only known thermal spring in Wales.
Sites within 20km of Taff’s Well
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Garth Hill
photo 25 forum 2 description 11 -
Llywnda-Ddu
description 1 -
Craig-Y-Parc
description 1 -
Cae-yr-Arfau
photo 6 description 3 -
Caerau Hillfort, Rhiwsaeson
photo 8 description 5 -
Sant-Y-Nyll
description 1 -
Pant Waungorrwg
photo 4 description 1 -
Garnedd Lwyd
photo 4 description 1 link 1 -
The Bryn
photo 9 forum 1 description 2 -
Pont-y-Pridd Rocking Stone
photo 20 forum 1 description 13 -
Tarren Deusant
photo 4 forum 2 description 4 link 1 -
Lle’r Gaer
description 1 -
Twyn Hywel
photo 4 description 1 -
Coed-Pen-Maen Common
photo 10 description 2 -
Twyn-y-Gwynt
photo 6 description 1 -
Caer-moel
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Castle Field Camp
description 1 -
Carneddi Llwydion
photo 16 description 2 -
Cwmeldeg
photo 5 description 2 -
Caerau
photo 1 description 6 -
Twyn Yr Oerfel
photo 10 description 2 -
Twyn Cae-Hugh
photo 6 description 2 -
Mynydd Bach (Maesycymmer)
photo 12 description 3 -
Vianshill
photo 2 description 1 -
Leckwith
description 1 -
Marsyd
description 1 -
The Beacons (Llantrisant)
photo 7 description 3 -
Cottrell Park
photo 5 description 4 link 1 -
Bonvilston Gaer
description 1 -
Coed-y-Cwm
photo 8 description 2 -
Redland Farm
description 2 -
Tinkinswood
photo 49 forum 3 description 26 link 7 -
Craig Ruperra
description 1 -
Tyle-gwyn
photo 2 description 2 -
St. Lythans
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Naboth’s Vineyard
description 2 link 1 -
Maes-y-Felin enclosure
photo 6 -
Dinas Powis
photo 10 description 1 -
Mynydd Machen
photo 10 description 3 -
Mynydd Y Fforest
description 1 -
Cefn Gwyngul
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Druidstone
description 4 -
Mynydd y Lan
photo 4 description 1 -
Twyn Pant-Teg
photo 5 description 3 -
Llantrithyd Camp
description 1 -
Llanquian Wood Camp
photo 5 description 1 -
Pengoetre Wood
description 1 -
Maen Cattwg
photo 3 description 2 -
Stalling Down
description 1 -
The Mount
description 2 -
Carn-y-Wiwer (Ynyshir)
photo 6 description 1 -
Coedcae Gaer
photo 10 description 3 -
Mynydd Brith-weunydd
photo 6 -
Castle Ditches (Llancarfan)
description 1 -
Rhiwderin
photo 3 description 3 -
Mynydd Pen-y-Graig
photo 6 -
Wenallt
description 1 -
Twmbarlwm
photo 37 forum 1 description 7 link 1 -
Coed y Defaid
description 1 link 1 -
Mynydd Maes-teg
photo 1 description 1 -
Perthgelyn
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Tir Lan
description 1 -
Tir-Cook
description 1 -
Gwern-y-Cleppa
photo 9 description 7 link 1 -
Mynydd Henllys
photo 28 description 2 -
Penrhiw Cradoc
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Twyn Bryn Bychan
photo 7 description 1 -
Atlantic Trading Estate Barrow
description 1 -
Craig Tan Y Lan
description 1 -
Llanblethian Hill
description 1 link 1 -
Mynydd y Capel cairns
photo 10 description 1 -
Mynydd y Capel stone
photo 4 description 1 -
Penrhiw Fer
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Tredegar Fort
photo 20 description 5 link 1 -
Pen Craig Abercwmboi
photo 10 description 1 -
Sully Island
photo 23 forum 1 description 3 -
Carn-y-Pigwn
photo 5 description 1 -
Marlborough Grange Barrow
description 1 -
Mynydd Bychan
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Mynydd y Gelli
photo 18 description 6 link 1 -
Cold Knap
photo 6 description 1 -
The Bulwarks, Porthceri
photo 20 description 3 -
Friar’s Point
photo 21 description 2 -
Breach Farm Barrows
description 1 -
Cefn-y-Rhondda
photo 11 description 1 -
Breach Farm
description 2 -
The Twmpath
description 2 -
Garn Fach (Ogmore Valley)
photo 8 description 2 -
Coed Y Gaer
description 1 -
Domen Fawr Barrow
description 1 -
Mynydd yr Eglwys
photo 3 description 1 -
Garn Fawr (Ogmore Valley)
photo 11 description 2 -
Coity Chambered Tomb
photo 7 description 5 -
Tarren Maerdy
photo 14 description 2 -
Gelligaer Common Ring Cairn 1
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Gelligaer Common Cairns
photo 5 description 1 -
Cefn y Brithdir
photo 12 description 1 -
Gelligaer Stone
photo 10 description 5 link 1 -
Gelligaer Common Ring Cairn 2
description 1 -
Mynydd Ton
photo 8 description 2