The enclosure is L-shaped, bounded to the west and north by an ordinary field fence and to the east and south by a stone-faced earthen bank standing roughly 0.6 metres high. That modest bank is the only formal boundary between the everyday agricultural land around it and the many grave markers recorded within, their presence confirming this as a burial ground of some substance, even if the identities of those interred and the full extent of the site's use remain unrecorded.

What makes the place particularly intriguing is the suggestion of a church site within the enclosure itself. In Ireland, early ecclesiastical foundations were frequently surrounded by a roughly circular or curvilinear enclosure, sometimes called a cashel if built in stone or a rath-like bank if constructed from earth and rubble. The co-existence of a burial ground and a possible church within the same bounded area is a pattern well attested across the country, often pointing to early medieval Christian activity, though in many cases the structural traces of such churches are slight or have vanished entirely. Here at Coulagh, the possible church site is noted as a separate recorded feature within the interior, though no further architectural detail is available to confirm its nature or date.