Somewhere in the pastureland of Kilmoylin, on a south-facing slope in County Waterford, lies an ancient circular enclosure that has essentially vanished from view. It is not ruined in the conventional sense, not a jumble of fallen stones or a roofless shell, but simply invisible at ground level, its presence preserved only on paper rather than in any feature a walker would notice underfoot.

An embanked enclosure is exactly what it sounds like: a roughly circular area defined by a raised earthen bank, often associated with early medieval settlement or agricultural activity, though the type spans a broad range of periods and purposes. This particular example, with an external diameter of around 30 metres, was recorded on the Ordnance Survey six-inch maps of 1840 and again on the 1926 edition, meaning that nineteenth and early twentieth century surveyors could still make out enough of a earthwork to mark it. That it no longer registers at ground level suggests gradual levelling over the intervening decades, most likely through continued agricultural use of the land. The enclosure sits towards the bottom of a slope, a position that would have offered some natural shelter and, depending on its original function, perhaps access to lower, wetter ground nearby.