The one at Ballyclogh in north County Cork is a case in point: a roughly circular earthwork sitting quietly in pasture on a gentle east-facing slope, its bank so thoroughly overgrown that it reads more as a thicketed boundary than anything of archaeological consequence. That bank, however, encloses a space some 34 metres across, and the whole arrangement, earthen bank, external fosse, and low internal rise, belongs to a type of enclosed farmstead that was the standard unit of rural settlement in early medieval Ireland, roughly between the fifth and twelfth centuries.

A rath, as this category of ringfort is known, was typically the home of a farming family of some local standing, the enclosing bank and ditch serving as much to define social territory and contain livestock as to provide serious defence. At Ballyclogh, the bank stands about 0.7 metres above the interior ground level and rises to around 1.3 metres on its outer face, dimensions that are modest but consistent with a working farmstead rather than a high-status enclosure. The external fosse, the ditch that runs around the outside of the bank, reaches a depth of 1.5 metres. The northern and north-eastern stretch of this ditch is waterlogged, which is not unusual where drainage is poor and the ground holds moisture, and it gives that side of the monument a slightly more preserved quality than the rest. The bank running from south-west to east-north-east is the more substantially defined arc; the opposing rise from east-north-east to south-west is lower and less distinct.

The overgrowth on the bank is both a complication and a kind of protection. Dense vegetation makes the full circuit harder to trace on foot, but it also discourages disturbance. Visitors approaching across the pasture should look for the slight but consistent change in ground level that marks the fosse, particularly on the drier southern side where the profile is cleaner.