5 metres, and walls that were quietly remodelled, thickened, and fitted with private chambers across several centuries. The ruins in Dromdarrig townland are known as Mungret Church, and for a long time they were called an abbey, a label that has since been questioned. The historian Harold Leask used that term in 1933, but the Urban Survey compiled by Bradley and colleagues in 1989 concluded there was no evidence for an abbey at Mungret in the thirteenth century, and that the building more probably served as the parish church of a medieval borough.

The site's origins go back considerably further than the stonework suggests. A monastery here is associated with Neasán of Mungret, whose feast day fell on the 25th of July, though the standing ruins belong to a much later phase of construction. The chancel dates to the thirteenth century, and its east window, a pointed twin-light with chamfered jambs of red and brown sandstone, is one of the more distinctive surviving features. The north and south walls of the chancel were substantially refaced and thickened in the fifteenth century, a process that, incidentally, blocked several earlier windows. That same campaign of work created a mural staircase rising inside the wall to a gallery at the west end of the choir, and a small private chamber in the thickened south wall, complete with a garderobe, which was essentially a medieval latrine built into the wall itself. The residential tower at the west end belongs to this fifteenth-century phase too, a gabled two-storey structure oriented north-south and connected to the church by doorways now mostly blocked. Samuel Lewis, writing in 1837, noted a tower and gateway about 300 yards to the east of the graveyard, though whether that formed part of the ecclesiastical complex has never been established.

The ruins sit within a graveyard that remains in use, so access is generally straightforward. The stonework rewards patient looking: the trefoil-headed piscina, a shallow wall niche that once held water for rinsing the chalice during Mass, is still visible in the south wall of the chancel, its sandstone jambs intact though the bowl is gone. The belfry, entered from the north-east angle of the residential tower, has a cavetto string course, a concave moulding, running around the exterior between upper floors, and the dressed limestone quoins at its corners are noticeably large and carefully laid. Much of the timber flooring within the belfry is long gone, and the upper floors would originally have been reached by internal ladders.