These circular earthwork enclosures, known in Irish as raths, were the farmsteads of early medieval Ireland, typically comprising a raised earthen bank and external ditch enclosing a family's dwelling and outbuildings. Tens of thousands once existed across the island. Many have been ploughed out, built over, or gradually dissolved by rain and livestock. The one at Kilcloher has not.

The Kilcloher rath occupies a stretch of north Clare that runs close to the Cliffs of Moher and the broader Burren fringe, a landscape where the rock lies close to the surface and the past tends to stay visible longer than it might elsewhere. Raths in this region often commanded clear sightlines across coastal ground, and their builders chose locations with evident care, balancing defensibility, drainage, and proximity to arable or grazing land. Without specific excavation records or documentary sources currently available for this site, the finer details of its construction, its occupants, and its period of use remain unrecorded in the public domain. What can be said is that it belongs to a class of monument that was in active use roughly between the sixth and twelfth centuries, and that its survival into the present is itself a kind of quiet achievement in a county that has seen considerable agricultural and coastal change.