On the eastern and southern sides, the boundary is formed by an earth-and-stone bank, modest in height. On the southern to north-eastern arc, however, the scale shifts considerably: a dry-stone bank rises to an external height of over three metres, dwarfing the earthen section and suggesting that whoever built this place had particular reasons to fortify one side more heavily than the other.

This is a cashel, the term used for a ringfort, that is, a circular enclosure dating broadly from the early medieval period in Ireland, typically between the fifth and twelfth centuries, built primarily as a defended farmstead for a family of some local standing. What distinguishes a cashel from the more common earthen ringfort is the use of dry-stone construction, without mortar, stacked and shaped to hold by weight and friction alone. The enclosure here measures roughly thirty metres across in both directions, a respectable size. At the northern end, the stone bank is interrupted by a seam of natural limestone outcrop that cuts through the wall and pushes further northward beyond the enclosure, a reminder that the builders were working around the underlying geology rather than entirely imposing their own order on it. The site was recorded and compiled by Denis Power, with details uploaded in August 2011.

The cashel sits on what the notes describe as elevated terrain at the northern end of a limestone ridge in the townland of Graigues, in the historic barony of Kenry in south County Limerick. The interior is level and covered by deciduous trees, which means the enclosing banks are best appreciated in late autumn or winter when the canopy has thinned and the stonework becomes more legible through the bare branches. The substantial dry-stone bank on the southern to north-eastern side is the feature most worth examining closely, both for its scale and for the point where natural limestone breaks through the construction at the north, blurring the boundary between built and geological form.