The remains are minimal, a short section of walling, and yet that fragment sits within what may be an early ecclesiastical enclosure, the kind of roughly circular or curvilinear boundary that in Ireland typically marks a site of considerable age, often pre-Norman, sometimes early medieval. These enclosures, when identified, tend to suggest that a place of worship occupied the ground long before any standing stonework was raised, the boundary itself being the oldest surviving feature.

Beyond the walling and its enclosure, the historical record for Killour is thin. What the landscape offers instead is the particular quality of a site that has simply been left alone, overtaken by growth, sitting quietly on elevated ground in the area around Lough Mask and Lough Carra, a district of considerable early ecclesiastical activity in the west of Ireland. The church itself has not survived in any meaningful sense, but the enclosure boundary, if that is indeed what it is, gives the site a significance that the remaining stonework alone would not.