This subcircular walled area, measuring 18.3 metres in internal diameter, was built with walls originally 1.4 metres thick. The stonework still shows clear facing on both the internal and external sides, with a deliberate gap of 2.3 metres on the southern side serving as an entrance. At the eastern edge, a curious semicircular kink in the wall appears to be an original architectural feature rather than later damage.

At the heart of the enclosure stand the ruins of St. Columbkille’s Chapel, a modest structure measuring 5.75 metres north to south and 3.4 metres east to west internally. The chapel walls, three quarters of a metre thick, were constructed from mortared slab stones with carefully cut ashlar quoins that survive particularly well at the northeast corner. The main doorway sits centrally in the eastern wall, surrounded by several reused cut stones. Inside, visitors can still see St. Columbkille’s Bed in the northeast corner; two horizontal slabs bordered on the south by three upright stones. Above this feature, a small alcove measuring 35 by 20 centimetres and 35 centimetres deep has been carved into the eastern wall, playing an important role in the traditional turas, or pilgrimage circuit, associated with the saint.

The site contains several cairns topped with important cross slabs. The largest, measuring 4.3 by 2.9 metres and standing 0.85 metres high, sits against the southeast interior of the enclosure and supports two cross slabs; one standing 72 centimetres high with faint geometric designs between its arms, and another smaller slab bearing an inscribed cross and possible additional motifs. A second cairn to the northeast supports a slab carved with a simple cross on its western face, whilst a third cairn to the south stands without any cross slab. Perhaps most intriguing is the mound outside the enclosure to the east southeast, topped by a large natural erratic boulder known as Leac Na mBonn, or the flagstone of the footsoles. This stone bears a distinctive carved cross within a circle, with the cross arms extending just beyond the circumference to terminate in T shaped bars, marking another significant station in the pilgrimage tradition of this sacred landscape.