That word, applied to a place in the Irish landscape, almost always signals something older than the parish church, something that sat in the open air long before the arrival of formal religious architecture. Across Ireland, the term has been attached to flat-topped rocks, megalithic structures, and natural formations that communities associated with ritual or ceremony, sometimes pre-Christian, sometimes absorbed into later folk devotion.

Killaguile itself is a quiet townland, and the monument recorded here under the name Altar belongs to a category of site that the Irish landscape holds in some abundance but does not always explain. Without further detail currently available, the specific character of this particular feature, whether it is a worked stone, a natural outcrop given ceremonial significance, or the remains of a more formal structure, remains uncertain. What the name alone suggests is a long local memory of the place as somewhere set apart, somewhere that warranted a particular kind of attention from the people who lived alongside it.