The outer enclosure at Castlecluggin is a sub-rectangular area measuring roughly 28 metres north to south and 51 metres east to west, bounded by a stone wall standing between 1.2 and 1.5 metres high. But within the western half of that space, a smaller sub-rectangular area of almost identical north-south extent sits defined by a scarp, a low earthen or stone edge, that may represent an earlier enclosure predating the current boundary. Whether this inner form is the ghost of an older sacred precinct, or something else entirely, has not been firmly established, which is part of what makes the site quietly compelling.

The graveyard takes its name from Tuoghcluggin Church, the remains of which once stood in the south-east quadrant of the enclosure. The church itself is gone in any substantial sense, reduced to a site designation in the archaeological record, but its placement within the larger graveyard is typical of early Irish ecclesiastical organisation, where a small church and its surrounding burial ground would form the core of a local community's religious life over centuries. Of the inscribed headstones that survive, the earliest is dated 1779, though the numerous uninscribed grave markers scattered across the site suggest burials extending back considerably further, into a period when carved stone inscriptions were either beyond the means of local families or simply not the custom. Uninscribed markers of this kind are common in rural Irish graveyards and are sometimes the only physical trace left of entire generations.

The graveyard lies in pasture to the west of the public road, so access involves crossing farmland and visitors should be mindful of that context. It is worth knowing that the immediate area is unusually dense with related heritage features: the site of Castle Cluggin lies approximately 135 metres to the west, and Tobernacrohaneeve holy well, a holy well being a natural spring traditionally associated with a saint or with healing properties, sits around 150 metres to the east. Together, the three sites form a loose cluster that speaks to how closely church, castle, and sacred water source were once bound together in the organisation of Irish rural life. The inner scarp within the graveyard is subtle and easy to miss if you are not looking for it deliberately; it is most legible from the western side of the enclosure, where the change in ground level becomes apparent.