Near Wilkinstown in County Wexford, an oval earthwork measuring roughly 70 metres north to south and 60 metres east to west has been recorded on Ordnance Survey maps since 1839, yet when the surrounding land is under cereal crop, it simply disappears. No bank, no ditch, no visible trace at ground level. The enclosure is there in the archive and, presumably, somewhere beneath the soil, but the casual observer walking past would have no reason to suspect anything at all.

Embanked enclosures of this kind are broadly understood as enclosed spaces defined by a raised earthen bank, though their precise origins and purposes can vary considerably, ranging from early medieval settlement to ceremonial or agricultural use in much earlier periods. What distinguishes this one is partly its persistence in the cartographic record. The 1839 edition of the Ordnance Survey six-inch map captured it, and the 1924 edition did the same, suggesting the earthwork was legible in the landscape for at least that stretch of time. It sits on a slight rise within otherwise low-lying ground, a position that may have made it more visible to earlier surveyors even as modern land use has effectively swallowed it from view.