The well, known in Irish as Tobar Geal, meaning bright or white well, drains westward into a stream that marks the townland boundary with Scrageen, and a ringfort with an associated bullaun stone, a boulder bearing one or more cup-shaped hollows likely used for grinding or ritual purposes, lies just 180 metres to the north-east. By 1838, when the Ordnance Survey mapped it, the site was already old enough to be treated as a fixed landmark, its circular shape carefully noted alongside the outflowing stream.

The local memory around the well was collected between 1937 and 1938 by pupils of Lackamore National School as part of a national folklore-gathering scheme. One account describes Tobar Geal as a "twin well" with Cragg Well, said to share with it a common founding, the two wells linked through the sister saints Deborah and Commaneth. The well was known as a pattern well, meaning it was a site for the traditional practice of "rounds", circuits walked around the well in a prescribed number, here five, often accompanied by prayer. Offerings left at the well after rounds included beads, medals, ribbons, coins, pictures, and drinking vessels, though food was never left. The well was credited with curing sore eyes above all, but also toothaches, headaches, stomach troubles, and bone disease; people took water home for those too ill to attend in person. One account recorded by a schoolchild at Lackamore tells of a man whose sister died before she could fulfil a vow to make rounds at Cragg Well. He attempted to substitute Tobar Geal in her place, and on his way home from Newport she appeared to him at the approach to the well, correcting his error and insisting the rounds be made at Cragg as promised. When he returned to Tobar Geal having done so, she appeared again and thanked him. The storyteller noted he had the account from the man himself. The well is surrounded by whitethorns and evergreen bushes, and no trout, whose presence in Irish holy wells is traditionally considered significant, has ever been recorded in it.