Rath More, meaning "great fort" in Irish, belongs to a category of place-name that tends to signal something substantial beneath the surface, quite literally. Enclosures of this type are among the most common archaeological monuments in Ireland, yet they remain among the least understood in their particulars. A rath, sometimes called a ringfort, is a roughly circular enclosure defined by one or more earthen banks and ditches, built primarily during the early medieval period, between roughly the fifth and twelfth centuries. They served as farmsteads, the defended homesteads of farming families, and the landscape of County Clare is scattered with them in considerable numbers.

What makes Rath More in County Clare worth pausing over is precisely what it implies about the local hierarchy of such sites. In a countryside where ringforts are common enough to fade into the background of fields and hedgerows, one that attracted the prefix "more" was evidently considered exceptional by the people who named it. Size, status, or some combination of the two likely set it apart from its neighbours. Beyond the name and the monument type, the documentary record for this particular enclosure is thin, which is itself a quietly telling detail. Many of Ireland's most significant early medieval sites have passed through centuries of agricultural use, gradual erosion, and simple forgetting, their original scale and meaning compressed into a rise in a field or a curve in a boundary line.