The site occupies an oblong enclosure measuring roughly 32 metres from northeast to southwest and 21 metres across, surrounded by a substantial wall about 1.65 metres thick. Its position is naturally dramatic; whilst a laneway borders the southeast side, the northwest edge runs along the top of a small rock cliff, giving the entire complex a sense of ancient authority over the landscape.

The northeast end of the enclosure contains seven small cairns, with one particularly noteworthy example standing out amongst them. This subcircular cairn, measuring approximately 4.35 by 3.2 metres and rising to 1.13 metres in height, bears several intriguing features on its summit. Two stone slabs with distinctive U-shaped notches cut into their tops can be found here; according to an 1870s account by Patterson, these notches once held a dumbbell-shaped ‘healing stone’ when not in use by pilgrims. Most remarkably, the cairn also supports a cross-inscribed slab decorated on both faces with elaborate Greek bar crosses, circles, and geometric patterns, testament to the site’s religious significance. Along the cliff face, a curious D-shaped dressed rock protrudes to form what’s known as St. Conall’s bed, a seat-like feature carved directly from the living rock.

The site’s connection to St. Conall extends beyond the enclosure itself to include a nearby holy well, surrounded by its own penitential cairn containing a triangular stone with yet another U-notch. Historical records indicate that a bullaun stone, essentially a primitive font, was removed from the site during the 19th century, whilst more sombre recent history reveals that the enclosure served as a burial ground for unbaptised children in the last century. This layering of sacred functions across time, from early Christian worship to folk healing practices and cilliní burial traditions, makes the Relig at Aighan a particularly poignant example of Ireland’s complex religious heritage.