A holy well enclosed within walls nearly two metres high is already unusual. Most such sites in Ireland are modest, open affairs, a stone-lined pool beside a hawthorn hung with cloth offerings. This one, tucked along the north bank of the Greagagh River in east Waterford, sits inside an oval masonry enclosure roughly 29 metres by 20 metres, with the formal proportions of a walled garden rather than a place of folk devotion. The well itself is a circular drystone structure, about one and a half metres in internal diameter, with a lintelled canopy overhead and a narrow north-facing opening just wide enough to stoop through. There is, notably, no evidence of active veneration surviving at the site today.

The well appears under its current name on Ordnance Survey maps from both 1840 and 1927, which at least confirms its identity was well established by the time cartographers reached this corner of County Waterford. Around 1840, the antiquarian John O'Donovan recorded that a pattern, the traditional Irish gathering held at a holy well on a saint's feast day, took place here on the 10th of February, the feast associated with Saint Mochua. By the time O'Donovan was writing, such patterns were already in decline, and whatever rituals once drew people to this spot on a February morning along the Greagagh River have left no visible trace. The enclosure has three points of entry: a gateway with masonry piers to the east, a bridge over the stream giving access from the road to the south, and a brick doorway to the north that was once connected to Clashmore House. That house has since disappeared entirely, and the doorway is now blocked, leaving a threshold that leads nowhere.