At Kilcavan in County Wexford, the parish church of the Bargy district sits within a graveyard that is almost perfectly round, measuring roughly 58 metres north to south and 57 metres east to west, its boundary formed by an earthen bank and hedge rather than the mortared stone walls more commonly associated with later church enclosures. That near-circular shape is significant. Rectilinear boundaries tend to reflect post-medieval or early modern planning, while circular or subcircular enclosures are generally understood to preserve the outline of much earlier monastic or early Christian foundations, the bank itself sometimes predating the church it now surrounds by many centuries.

The site occupies a slight spur of ground running roughly northwest to southeast, a positioning that would have made practical sense to early builders seeking a dry, elevated foothold in an otherwise low-lying landscape. A stream runs approximately 300 metres to the east and curves around to the south and west, coming within about 600 metres of the site to the southwest as it flows northward. That looping watercourse effectively wraps around three sides of the spur, giving the location a naturally defined, almost island-like character. Early ecclesiastical communities frequently sought out such topography, where a modest rise of ground and the presence of water offered both drainage and a degree of natural separation from the surrounding land.