These structures, known interchangeably as raths or ringforts, were the everyday farmsteads of early medieval Ireland, typically enclosed by one or more raised earthen banks and ditches. They were not primarily military fortifications, despite what the word "fort" implies, but working farmsteads, the homes of farming families who kept their livestock safe within the enclosure at night and carried out the ordinary business of rural life within their banks.

Ringforts are among the most common archaeological monuments in Ireland, with estimates placing their number at somewhere between 40,000 and 50,000 across the island. Clare itself is particularly dense with them. The townland name Carrowlagan derives from the Irish, with "carrow" generally indicating a quarter-land, a unit of land division with roots in the Gaelic land system that predates English administration. The rath at Carrowlagan belongs to this broader pattern of early medieval settlement, probably dating to somewhere between the fifth and twelfth centuries, the long period during which the ringfort was the dominant form of rural enclosure in Ireland. Without more detailed excavation records or documentary sources attached to this particular site, its specific history remains quiet, held in the soil rather than the archive.