That kind of density is unusual even by the Burren's standards, and this particular enclosure, the most southerly of the three, offers some of the most telling detail about what early medieval life at altitude on karst limestone actually looked like.

The enclosure is sub-square in plan, measuring roughly 37 by 34 metres, with straight sides and slightly rounded corners. A cashel is a stone-walled ringfort, a type of enclosed farmstead widespread in early medieval Ireland, and this one was built to last: the walls, around three metres thick, were constructed from large blocks laid horizontally to form internal and external faces, with smaller stones packed between them. Some of the original external facing is still visible, and a possible entrance survives midway along the southern wall. A modern drystone wall, added later, runs along the top of the earlier structure, a quiet reminder that the Burren's farmers kept repurposing what was already there. Excavation of the interior revealed the remains of three structures and several subdividing walls. The floor of the enclosure sits one to two metres below the external ground level on the northern side, giving the interior a distinctly sunken quality. Deposits recovered during excavation were rich in animal bone, and the artefacts included bronze dress pins and glass beads, both imported goods, which points to a community with connections beyond the immediate landscape. Radiocarbon dating places the enclosure's use between the 7th and 9th centuries AD. That date range may carry additional weight: excavation beneath the nearby Caherconnell Cashel uncovered burials from the 6th and 7th centuries under a mound, raising the possibility of a familial or dynastic link between the two sites across several generations, as argued by Comber and Jones in 2008 and developed further by Comber in 2016.