Known historically as Both Chonais, this monastic site dates back centuries and comprises multiple monuments that, whilst now divided by a modern road, once formed a cohesive religious settlement. The western side of the road contains a rectangular enclosure that served as a burial ground, its southwestern corner marked by two jamb stones standing 1.5 metres apart, likely indicating an old entrance to this sacred space.

Within the graveyard enclosure, archaeological features hint at the site’s former glory. A grassed-over internal wall near the northern end may mark where a church once stood, with those jamb stones possibly belonging to this lost building rather than the enclosure entrance. Just north of this dividing wall sits a flat-topped boulder that archaeologists believe could be the base of a high cross, whilst to the south lies what appears to be a cross-inscribed slab. Near the northeastern end of the wall, another stone slab adds to the collection of early Christian stonework preserved at the site.

Recent investigations have revealed even more about Carrowmore’s significance. In 2012, the Bernician Studies Group conducted a magnetometer survey in the fields surrounding the high crosses, uncovering evidence of a bi-vallate early Christian ecclesiastical enclosure buried beneath the surface. These double earthwork defences would have defined and protected the monastic community, demonstrating that what remains visible today represents only a fraction of what was once a substantial religious complex serving the spiritual needs of medieval Donegal.