The enclosure at Castlefarm in County Limerick follows almost none of those conventions. It has no fosse, no bank, and no internal features of the kind typically associated with ringforts or enclosed settlements. What it does have is a quietly puzzling presence: a circular earthen platform rising to about 1.8 metres at its highest point, stretching roughly 30 metres across, sitting in what was recorded as poor, wet lowland. The absence of the expected features is what makes it interesting. Without a fosse to define it or a bank to contain it, the site resists easy classification.

The description we have of it comes from a survey conducted around 1942 and 1943, recorded by O'Kelly and published in the following year. At that time, the monument presented itself as a largely featureless raised platform, and the surveyor noted both its modest elevation and its unpromising setting in waterlogged ground. Whether the original builders made deliberate use of that wet landscape, perhaps as a form of natural defence or boundary marker, or whether the ground conditions have changed significantly over the intervening centuries, is not something the available record can answer. Caimin O'Brien compiled the site entry and it was uploaded to the record in February 2020, which at least confirms the monument was still considered worth documenting in its current form.

The outline of the enclosure remains visible today on Digital Globe aerial photographs, which is often the most reliable way to appreciate monuments of this kind. At ground level, a low earthen rise in a damp field can read as little more than a slight unevenness underfoot, easily overlooked unless you already know what you are looking at. If you do visit, the site sits within agricultural land, so access would require landowner permission. Aerial imagery, freely available through mapping platforms, gives a clearer sense of the enclosure's shape and scale than a walk around the perimeter might, particularly in wetter months when the surrounding ground is likely to be heavy going.