It encloses a well site that is now heavily overgrown, its interior lost to vegetation, its entrance gap on the southern side still just about legible in the dry-stone fabric. The structure measures roughly 3.3 metres across, modest enough that you could easily mistake it for a collapsed field boundary if you stumbled upon it without knowing what you were looking for.

The well is dedicated to St. Columbkille, the sixth-century monk and scholar best known for founding the monastery on Iona and for his central place in the spread of Irish Christianity across Scotland and northern Britain. Holy wells dedicated to him are scattered across Ireland, and they typically served as focal points for devotional practice long after the formal church had moved elsewhere. At this particular site, the antiquarian John O'Donovan noted in 1838 that stations were performed here on Mondays and Thursdays. Stations, in Irish popular religion, were structured circuits of prayer carried out at a series of fixed points around a sacred site, often involving bare feet, recited prayers, and the circumambulation of the well itself. The twice-weekly pattern O'Donovan recorded suggests a living tradition rather than a merely annual pattern tied to a feast day, which makes the site quietly unusual among its kind.