It is the kind of detail that tends to go unnoticed, partly because the building is densely overgrown and partly because very little about the site announces itself. The church sits within a graveyard in the townland of Maigh Cuilinn in County Galway, its north and south walls almost entirely gone, leaving the two gables as the principal survivors of what was once a rectangular structure roughly sixteen metres long and six and a half metres wide, oriented east to west in the manner typical of medieval ecclesiastical buildings.

The ruins are classified as a probable medieval church, and the surviving fabric offers a few quiet clues to its age and character. Both the east and west gables retain narrow single-light windows with flat heads, a form associated with medieval construction in the west of Ireland. The carved stone head above the west window is harder to date with certainty, but such carvings appear at a number of medieval Irish ecclesiastical sites, sometimes interpreted as protective or apotropaic figures. The site lies roughly three hundred metres east of Moycullen Castle, placing it within a cluster of medieval features in the area. References in the historical literature go back at least to Hardiman's work of 1846 and are noted again by O'Flanagan in 1927 and Killanin in 1947, suggesting the ruins have been recognised as significant for well over a century, even as the walls have continued to deteriorate. The curving graveyard boundary wall, by contrast, appears to be of modern construction, a reminder that the site has remained in use long after the church itself fell out of function.