The reason for that careful phrasing is straightforward: despite being recorded nearly two centuries ago, its precise location has never been firmly established. That uncertainty is itself part of what makes this site interesting, a feature on the Irish landscape that has been acknowledged but never quite pinned down.

Ringforts, known also as raths or lios depending on regional tradition, are circular enclosures typically dating from the early medieval period, roughly 500 to 1200 AD, and were used as farmsteads or settlement sites for a single family or small community. They are among the most common archaeological monument types in Ireland, yet even common things can slip through the documentary record. This particular example was noted in the Ordnance Survey Letters of 1837, a remarkable series of field reports compiled by scholars and surveyors as part of the wider OS mapping project. The entry, referenced by O'Flanagan in 1927, records the ringfort's existence near the Johnstown House avenue but stops short of giving a precise position. Whether that vagueness reflects the state of the land at the time, overgrowth, or simply a surveyor moving quickly through the townland is not recorded.

For anyone wishing to look for it, the site sits within the Newtown Upper townland in north County Dublin, in the general vicinity of Johnstown House and its approach avenue. Access to private land in Ireland always requires permission from the landowner, and nothing in the available record suggests this site is on public ground. Given how little precise information exists, a visit is less about standing at a confirmed monument and more about reading a landscape with an awareness that something early medieval may still be present in the field boundaries or slight rises nearby. The Ordnance Survey Ireland mapping tools, cross-referenced with the Archaeological Survey of Ireland database, are useful starting points before any attempt to locate the site on the ground.