Known in Irish as a rath, this type of monument is one of the most common archaeological features in Ireland, with somewhere between 40,000 and 50,000 examples recorded across the country, yet familiarity has done little to diminish their quiet strangeness. A rath is essentially a circular enclosure defined by one or more earthen banks and ditches, built during the early medieval period, roughly between the fifth and twelfth centuries, and most likely used as a defended farmstead by a single family or small community. That so many survive, even partially, is a reminder of how densely settled the Irish countryside once was at a very local, very human scale.

The Kilkee example sits within a part of Clare that has been inhabited since prehistoric times, with the Burren to the north and the Loop Head peninsula extending westward into the Atlantic. The broader landscape is scattered with monuments from various periods, and a rath in this location would fit a pattern of early medieval agricultural settlement, where families staked out their ground close enough to the coast to fish and trade, but set back sufficiently to manage livestock and tillage. The earthen bank of a rath, sometimes reinforced with stone, would have enclosed a house or cluster of houses, perhaps a souterrain, which is an underground stone-lined passage used for storage or refuge, and various outbuildings. Over centuries, many raths became absorbed into field systems, their banks reduced by ploughing or quarrying, though some survive in reasonable condition where land use has been less intensive.