Near Castlegar in County Galway, a poorly preserved ringfort sits roughly 130 metres north-east of another ringfort, the two lying close enough together to suggest that whoever settled this landscape did not think in terms of isolation. Paired or clustered ringforts are not unknown in Ireland, and their nearness to one another raises questions about family groups, landholding, and the social organisation of early medieval rural life that the ground itself no longer answers clearly.

The monument is a subcircular rath, measuring approximately 35 metres north to south and 28 metres east to west. A rath is an earthen ringfort, typically defined by a bank and ditch, though here the defining feature has been reduced to a scarp, a sloped edge in the ground where the original earthwork has worn down over centuries. A field wall, added at some later point, curves around the outside of the monument from the south-south-east, around the western side, and up to the north-north-east, suggesting the land was absorbed into ordinary agricultural use long ago. The interior has since been planted with trees, which is not uncommon for ringforts across Ireland; such enclosures were often left unploughed out of a residual wariness about disturbing fairy ground, and trees followed naturally into the space left undisturbed.