The one at Riddlestown, County Limerick, does the opposite. Its earth-and-stone bank, roughly circular and about thirty-five metres across at its widest east-to-west, is built in such a way that the interior sits lower than the surrounding terrain. The inner face of the bank rises to around 0.85 metres, while the outer face reaches only about 0.25 metres above the ground outside. Stand within it, and you are effectively in a shallow bowl, looking up at the bank rather than out over it from a height. That inversion is quietly puzzling, and it is the kind of detail that tends to stop fieldworkers mid-note.

Enclosures of this general type, where a circular or roughly circular area is defined by a bank of earth and stone, are found across Ireland and are often associated with early medieval settlement, farming activity, or ritual use, though individual sites resist easy categorisation without excavation. What makes this one harder still to read is its present condition. The site was recorded by Denis Power, whose survey notes were uploaded in August 2011, and even at that point he found it densely overgrown with briars, making close inspection difficult. A ruinous drystone field boundary, the kind of dry-laid stone wall built without mortar that was used across rural Ireland to divide grazing land, crosses the interior on a rough north-to-south axis, sitting about nine metres in from the eastern edge. Whether it is contemporary with the enclosure or a much later addition imposed on an older feature is not known. Limestone outcrops through the ground in the northern half of the interior, suggesting the underlying geology was never far from the surface here.

The site sits on a south-facing slope just below the top of a hill, which gives it some natural shelter and means the southern stretch of the bank benefits from the gradient, appearing externally higher at that point than elsewhere. Access is not formalised, and the scrub and briars noted in the survey record are unlikely to have thinned with time. Sturdy clothing and patience would be sensible. The enclosure is not signposted or managed as a visitor site, so locating it requires attention to the landscape rather than any waymarked path. What a careful visitor will find, once they have pushed through enough vegetation, is a subtly sunken space of about thirty-five metres across, banked on all sides, with old limestone breaking through the soil to the north and a collapsed stone wall dividing the ground underfoot.