The one at Ardhoom, in County Mayo, is a rath, the term used for a ringfort constructed from earthen banks rather than stone, and it sits quietly in a county that already holds an extraordinary density of prehistoric and early medieval remains.

Raths were typically built and occupied during the early medieval period, roughly between the fifth and twelfth centuries, and functioned as enclosed farmsteads for a single family and their livestock. The surrounding bank and internal ditch provided a degree of security and also acted as a marker of social status. Mayo, with its combination of coastal lowlands and inland terrain shaped by glacial activity, preserves a significant number of these enclosures, many of them still visible as earthwork rings in pasture fields. The Ardhoom example belongs to this broader landscape of early settlement, a period when Ireland was organised into small kingdoms and the rath was the basic unit of rural life for the farming classes.