The enclosure wall, originally about 1.4 metres thick with carefully constructed inner and outer stone facings, features a distinctive semicircular kink on its eastern side that appears to be an original architectural element. A gap of 2.3 metres in the southern section provides access to this sacred space, which has served as a pilgrimage site for centuries.

At the heart of the enclosure stand the ruins of St. Columbkille’s Chapel, a small stone church measuring 5.75 metres by 3.4 metres internally. Built with mortared slab stones and ashlar quoins that survive particularly well at the northeast corner, the chapel’s walls are 0.75 metres thick. The eastern wall contains the central doorway, surrounded by several reused cut stones, whilst the northeast corner houses a curious feature known as St. Columbkille’s Bed; two horizontal slabs bounded by three side stones. Above this ‘bed’, a small alcove measuring 35cm by 20cm and 35cm deep has been carved into the wall, playing an important role in the traditional turas (pilgrimage circuit) associated with the saint.

The enclosure also contains several cairns topped with cross slabs, creating a landscape of devotional monuments. The largest cairn at the southeast, measuring 4.3 by 2.9 metres and standing 0.85 metres high, supports two cross slabs; one bearing faint geometric designs between its arms, the other inscribed with a cross and possible additional motifs. Another substantial cairn to the northeast, topped with a slab bearing a simple incised cross, stands alongside a third cairn to the south. Perhaps most intriguing is the mound abutting the enclosure’s outer edge at the east southeast, where a large natural erratic stone known as Leac Na mBonn (flagstone of the footsoles) bears an inscribed cross within a circle, its shafts extending beyond the circumference to end in T bars. This collection of monuments, set in what is now fair pasture land, represents one of the most complete early Christian pilgrimage complexes in Donegal.