The structure, measuring approximately 19.5 metres east to west and 16 metres at its widest point north to south, appears to have started life as a rectangular enclosure before a later extension was added to the south. Today, this ancient site stands in fair pasture, surrounded by the rougher terrain typical of County Donegal's dramatic landscape.

Within the stone walls lie three penitential cairns, each topped with distinctive stone slabs that hint at the site's sacred purpose. The first cairn forms a horseshoe shape, standing nearly 1.5 metres tall, with a central slab bearing two simple crosses carved into its northwestern face. The second cairn, of similar height, features a slab decorated with an intriguing geometric pattern; rectangular grooved divisions run along each edge, creating a design that sets it apart from typical early Christian stonework. The third and largest cairn supports an uninscribed slab that, whilst lacking obvious decoration, appears to have been deliberately shaped to suggest a cross-like silhouette.

These cairns served as stations for pilgrims undertaking turas, the traditional Irish practice of ritual prayer and meditation at sacred sites. Penitents would have circled each cairn whilst reciting prayers, touching or kissing the stone slabs as acts of devotion. The site's location in Glencolumbkille, an area strongly associated with St. Columba, suggests it may have formed part of a larger pilgrimage route through this historically significant valley, where faith and landscape have been intertwined for over a millennium.