Somewhere in the pastureland of Mountbolton in County Waterford, there is a well that has been known and named for centuries, yet cannot actually be seen. Tobernacarrick, to use the Irish form, lies on a gentle south-facing slope, completely invisible at ground level, swallowed by ordinary grazing land with no surface feature to betray its presence. It is the kind of place that exists more confidently on paper than it does in the landscape.

The well appears, marked consistently, on both the 1840 and 1925 editions of the Ordnance Survey six-inch map, which is itself a small curiosity. The OS Name Books, the field notebooks compiled by surveyors as they moved through the country recording place names and local knowledge in the nineteenth century, record it as an ancient well. That designation implies it was already old and already regarded with some degree of significance when the surveyors came through. Holy wells in Ireland, of which there are thousands, were traditionally associated with local saints, seasonal patterns of visiting called patterns, and beliefs about healing. Whether Tobernacarrick carried any of that weight is not recorded, but the name and the antiquity attributed to it suggest it was not simply a functional water source. The fact that it held its name across nearly a century of mapping, despite being invisible underfoot, points to a persistent local memory of the place.