This oval enclosure measures approximately 22.5 metres from north to south and 17.5 metres from east to west, its boundaries defined by a low stone and turf wall that still reaches heights of 0.75 metres on its eastern side. The builders cleverly incorporated natural rock outcrops into their construction, blending human engineering with the landscape’s existing features. Though time has worn down much of the western section to little more than a faint outline, the eastern portions remain remarkably intact.

The northern wall holds particular archaeological interest, revealing what appear to be the remnants of a circular foundation, roughly 2 metres in diameter, with a possible entrance facing northwest. This feature suggests the site once supported additional structures, perhaps dwellings or storage buildings that would have stood within the protective embrace of the outer walls. The fortification’s defensive position on elevated ground would have provided its inhabitants with commanding views across the surrounding bogland, offering both strategic advantage and early warning of approaching visitors or threats.

At the base of the mound, partially obscured by encroaching turf, lies a small chamber constructed from stones. This mysterious structure adds another layer to the site’s story, though its exact purpose remains unclear; it could have served as storage, a shelter, or held ritual significance for the cashel’s inhabitants. The entire complex stands as a testament to the resourcefulness of Ireland’s early medieval communities, who transformed this isolated outcrop into a fortified homestead that has endured for centuries in Donegal’s windswept landscape.