Exposed along the face of a drainage cut and across the adjacent field surface, the spread measures roughly 4.4 metres in length, 5 metres in width, and less than a tenth of a metre deep. It is, in physical terms, a modest thing, but its survival raises questions that are difficult to answer with certainty.

The ash is peat ash, the residue left when bog material burns, and in several places it lies beneath layers of stratified peat, meaning the bog continued to grow over it after the burning took place. That sequence of deposition suggests the event is genuinely old, though precisely how old is unclear from what has been recorded. Whether the burning was deliberate, perhaps to clear or manage a section of bog, or whether it happened accidentally, is not known. Bogs are not the obvious places one associates with fire, but episodes of burning in Irish bogland are not without precedent, and the slow accumulation of peat above the ash layer is exactly the kind of accidental archive that wetland environments are capable of producing. The Irish Archaeological Wetland Unit, based at University College Dublin, was among the research bodies that worked to document such traces before drainage, cutting, and agricultural activity could erase them entirely.