Walk into this walled burial site in Grallagh, a small townland in north County Dublin, and you will find the interior rising sharply upward toward the church ruins, then dropping away steeply to the south. It is a topography that feels slightly wrong, and the reason why is embedded in the shape of the place itself. Grallagh, from the Irish An Ghreallach, means "miry place", a name that speaks to the poorly drained, waterlogged land immediately to the south, in contrast to the higher, firmer ground to the north and east where the burial activity clusters.

According to a 1975 report by H. A. Wheeler filed with the Sites and Monuments Record, the graveyard was not always the roughly sub-rectangular space it is today, measuring approximately 80 metres north to south and 70 metres east to west. It appears to have begun as a smaller, circular burial ground enclosed by a bank and an external fosse, which is a type of defensive or boundary ditch. That earlier form was later extended northward to create the present layout. Traces of the original circle survive as a curving shallow ditch visible to the west, and the curved southern boundary almost certainly marks the original enclosing feature. That curve may be the remnant of an early Christian ecclesiastical enclosure associated with a monastery founded by St Maccallin, a dedication that gives the site considerable age, though its precise origins remain uncertain. The graveyard is still in use, and the earliest legible memorial belongs to Thomas Mangan, who died in 1768, with modern burial plots concentrated in the western quadrant.

The site is entered through a gateway in the centre of the eastern wall, with a stepped stile just to the north, and a second wider gateway at the northern end of the same wall. A concrete path runs around the interior perimeter. Before even entering, it is worth pausing at the roadside to the south of the entrance, where a water-eroded stone known locally as St Michael's Stone lies on the verge. Just 20 metres beyond the graveyard's southern boundary is St Michael's Well, also referred to as St Patrick's Well, and a further 60 metres south lies St John's Well. The church ruins themselves stand on the high ground in the southern quadrant, overlooking the steep drop. The combination of layered ecclesiastical geography, the faint ghost of a circular enclosure, and the miry land pressing in from below makes this a place that rewards slow attention.