The structure is a penannular ring-ditch, meaning a near-complete ring left deliberately open at one side, and it came to light not through targeted investigation but through the routine topsoil stripping that precedes construction work. That it survived at all, invisible at ground level and unremarkable from above, is part of what makes it quietly arresting.

When archaeologists excavated the site under licence in the early 2000s, following initial monitoring that flagged several areas of interest, they uncovered a shallow circular trench roughly 14.4 metres in external diameter, with walls between 55 and 60 centimetres wide and a carefully positioned entrance gap of just over four metres on the eastern side. At the centre of the enclosed space lay a cremation burial, the burnt remains of a person placed within the ring and left there, possibly for good. Radiocarbon dating of the burial returned a calibrated date of 390 to 170 BC, placing it firmly in the Irish Iron Age. A separate sample taken from the trench itself produced a slightly broader date range of 410 to 10 BC, suggesting the monument may have had a longer use or construction history than a single event would imply. Thirteen post-holes and stake-holes were also found scattered across the interior, hinting at structures, markers, or ritual furniture that no longer survive in any visible form. A cluster of prehistoric pits, excavated separately, lay about 60 metres to the north, pointing to a wider pattern of Iron Age activity in this part of County Wexford, not far from the tidal mudflats known as the South Slob.