The rath at Cloonnagleragh in County Mayo is one such site, sitting within a county that holds a considerable concentration of these early medieval enclosures.

A rath, to use the Irish term, is a roughly circular enclosure defined by one or more earthen banks and ditches, built primarily during the early medieval period, roughly between the fifth and twelfth centuries. They functioned as farmsteads and household enclosures, protecting families, livestock, and stored goods rather than serving any grand military purpose. The bank itself was the boundary, a marker of domestic territory as much as a defensive feature. Mayo's interior landscape, with its mix of pasture, bog, and drumlin country, preserves many of these earthworks in varying states of completeness, some still holding their shape with considerable clarity, others little more than a raised rim in a field. Cloonnagleragh, a townland name suggesting a clearing or pasture associated with a particular family or feature in the Irish, places this particular example within that quietly layered rural terrain.

Because detailed records for this specific site have not yet been made publicly available, the finer points of its condition, dimensions, and any associated features remain undocumented in accessible form. What can be said is that ringforts in this part of Connacht frequently occur in agricultural land that has seen continuous use since the medieval period, meaning the earthworks themselves sometimes survive beneath hedgerows or at field margins, their outlines best appreciated by walking the perimeter rather than looking for a dramatic central feature.