Somewhere beneath a north-facing pasture slope in Whitestown, County Waterford, an oval earthwork sits invisible to anyone walking over it. Roughly 35 metres from north to south and 25 metres from east to west, the enclosure is recorded but effectively gone at ground level, its banks long since flattened by centuries of agricultural use and the slow settling of soil.

What survives is a cartographic ghost. The 1840 edition of the Ordnance Survey six-inch map, produced during the first systematic mapping of Ireland and remarkable for the detail its surveyors captured of earthworks and field boundaries that were already ancient, shows the enclosure clearly enough to preserve its approximate dimensions and oval outline. Embanked enclosures of this kind are generally associated with early medieval settlement in Ireland, typically formed by a raised earthen bank defining a roughly circular or oval area, sometimes a farmstead, sometimes a site with a ritual or boundary function. Without excavation it is rarely possible to say which. The fact that it appears on the 1840 map but has since disappeared entirely above ground suggests the banks were already low by that point, and subsequent ploughing or pasture management did the rest.