A poorly preserved earthwork in Ardnagall, County Galway, this rath sits roughly 150 metres south-west of one ringfort and approximately 500 metres north-north-west of another, placing it within a cluster of at least three such enclosures in relatively close proximity. Ringforts, roughly circular enclosures defined by earthen banks and ditches, were the predominant settlement type in early medieval Ireland, used as farmsteads and occasionally as places of status or refuge. Finding them in loose groupings like this is not unheard of, but it does prompt questions about how these communities related to one another, whether as kin groups, rival households, or successive occupations of the same general territory across generations.

The enclosure itself is subcircular in plan, measuring around 34 metres north to south and 30 metres east to west. What survives is uneven: a bank remains visible at the north-east and south-west, while elsewhere the boundary has been reduced to a scarp, a low slope in the ground rather than a raised mound. More unusually, this scarp appears to have been squared off along part of its circuit, running in a more angular line from the south-west around to the north, which gives it a slightly irregular outline not typical of the form. An external fosse, a ditch running around the outside of the enclosure, is present throughout, suggesting the original construction was reasonably substantial even if time and agricultural activity have softened most of what once stood.