The one at Ballymorrisheen does the opposite. It occupies low-lying marshy pasture in County Limerick, where the ground slopes gently south-east toward the River Deel, and where the wide ditch surrounding the enclosure collects water and sits waterlogged in places. Whether that was always the intention or whether the landscape has shifted over the centuries is not recorded, but the effect today is a monument that feels more submerged than elevated, more absorbed by its surroundings than imposed upon them.

A ringfort, or rath, is essentially a circular enclosure defined by one or more earthen banks and ditches, most commonly associated with early medieval Ireland as a form of farmstead or settlement. The example at Ballymorrisheen follows the basic form: a roughly circular area of about thirty metres in diameter, bounded by an earthen bank and a wide external fosse, the fosse being the ditch that runs around the outside. The bank itself is modest in scale, rising to around 0.45 metres on the interior face and 0.6 metres on the exterior, with a gap of about four metres on the northern side that may represent an original entrance. The surrounding fosse is flat-bottomed and roughly eight metres wide, though only about 0.1 metres deep in places. Dense overgrowth covers both the bank and the interior. A field boundary that appeared immediately south of the enclosure on the Ordnance Survey six-inch map of 1923 has since been removed. The site was compiled and documented by Denis Power.

Finding this sort of earthwork requires patience and a certain tolerance for wet feet. The marshy pasture means that conditions underfoot will be soft even in drier months, and the interior overgrowth makes it difficult to read the enclosure clearly from within. The northern break in the bank offers the most legible point of entry and gives a reasonable sense of the circuit, but the fosse, shallow and wide, is easier to appreciate from a slight distance rather than standing in it. The 1923 OS six-inch map, now accessible through various digitised Irish mapping archives, remains useful for understanding how the surrounding field pattern once related to the site before the boundary to the south was lost.