The one at Clogher in County Mayo is a rath, the term used for a ringfort constructed primarily from earthworks rather than stone. A rath typically consists of one or more circular earthen banks and ditches enclosing a central living area, and in early medieval Ireland, between roughly the fifth and twelfth centuries, these enclosures served as the farmsteads of free landowners and their households. They were domestic spaces first and foremost, not military fortifications, though the raised banks would have offered some protection against cattle raiders and wolves.

Clogher is a placename with deep roots in Irish topography, deriving from the Irish "clochar", meaning a stony place or a heap of stones, and townlands bearing the name appear in several counties. Mayo itself has a dense concentration of early medieval earthworks, reflecting the intensity of agricultural settlement during the period when ringforts were in active use. The specific history of this particular site at Clogher remains thinly documented in publicly available sources, which is not unusual for the more modest examples of the type. Many raths survive as low, grass-covered banks that have been ploughed down over centuries, incorporated into field boundaries, or partially removed by drainage work, leaving the earthwork itself as the primary record of occupation.