The graveyard itself occupies a substantial circular mound, rising three metres high and measuring roughly 45 metres north to south by 38 metres east to west, with over 200 marked burials dating from 1735 to 1983. Today, only fragments of the church remain; a section of the north wall stretches 7.65 metres, joined to half of the east gable, both standing about 2.4 metres high and built from rubble stone that has partially collapsed over the centuries.

The church appears to have been abandoned early in its history, with a Royal Commission report from 1622 already describing it as being ‘in ruins’, whilst the Civil Survey of 1654-56 similarly referred to ‘an old Ruined Church’. Archaeological excavations in 1992 revealed that the original 13th-century church had been modified in the 15th century with the addition of a square tower at its south-west end, evidenced by the discovery of wider foundation walls capable of supporting such a structure. The excavation also uncovered numerous burials within the church footprint, along with an intriguing collection of artefacts including 267 clay pipes from 1870-1910, 110 bottles, coins (including a counterfeit 1783 halfpenny), coffin attachments, pottery sherds, and even a .303 bullet shell from the Second World War era.

The most striking architectural feature that survives is found in the east gable; the northern embrasure of a two-period window. The earlier window had a wide splay with a round-headed narrow opening about 1.15 metres high, its broken lintel still in place and sections of plaster coating preserved on the soffit. A later modification saw a secondary opening roughly parallel to the first, though only its lower courses remain. Whilst the flat stone slabs marked as ‘altars’ on old Ordnance Survey maps have long since vanished beneath vegetation, and the holy well associated with the site remains unlocated, Tullaghobegly continues to serve its community as an active graveyard, its medieval ruins a testament to centuries of continuous use as a sacred space.