Windmills were never common in Ireland, and the claim has left no obvious trace beyond the memory of it, which makes the earthwork in this Newtown pasture quietly difficult to categorise. It does not quite fit the profile of a ringfort, the most familiar form of enclosed settlement in the Irish landscape, yet it sits in good agricultural ground with a broad view westward over the bay.

The enclosure is D-shaped, its straight side running roughly east to west across about 27 metres, with the curved portion projecting northward some 23 metres. A low earthen bank, just over a metre high, defines the interior, and a gap roughly ten metres wide interrupts it at the south-east corner, possibly an original entrance. On the western side, the pattern of vegetation hints at a fosse, an external ditch, though it has not been confirmed by excavation. That combination of a rectilinear element and a projecting curved face is unusual, and whether the form reflects the enclosure's original purpose or centuries of modification is not clear. The windmill tradition complicates things further: post-mills and tower mills in Ireland were typically associated with Anglo-Norman or later plantation-era settlement, and if there is any substance to the local memory, it might suggest the site saw activity well beyond its original construction.