The enclosure measures about 33.5 metres across, and what makes it particularly curious is what the bank is made of: stone protrudes from much of its circuit, suggesting that what survives today as a broad, spread earthwork was once a proper stone wall. The process of collapse, with tumble fanning outward over time, has produced a bank that runs anywhere from five to seven and a half metres wide at its base, far broader than a simple earthen construction would be. The monument was first identified not on the ground but from the air, spotted on a Geological Survey of Ireland aerial photograph.

Enclosures of this general type, roughly circular boundaries defining a contained interior, are among the most common monument forms in the Irish landscape, and they span a wide range of periods and purposes, from prehistoric farmsteads to early medieval ringforts. At Bayswell, the picture is complicated by a cropmark, the faint trace visible from the air where a buried ditch affects the growth of overlying vegetation, that runs east to west roughly through the centre of the enclosure and continues beyond it in both directions. A ditch cutting straight through the middle of a circular monument is an unusual detail; it suggests either that the enclosure and the ditch belong to different periods, or that the landscape here has a longer and more layered history than the visible surface implies. The bank has not survived in the south-west quadrant, and within that gap three small depressions, each roughly three to four metres long and only about 0.3 metres deep, are spaced close together; these may be nothing more than the result of tractor activity, though their regularity leaves a small question open.

The site sits below the crest of a low, gently undulating ridge, with open views to the east and south but rising ground blocking sight lines to the north and west. That orientation, south-east-facing and partially sheltered, is a positioning seen repeatedly in early settlement sites across Ireland, where aspect and drainage mattered as much as defensibility.