A circle of burnt material half a metre across is not the kind of thing that makes it onto many itineraries. Yet what was uncovered at Mountbolton in County Waterford represents one of the quieter categories of archaeological find: a hearth, the physical remnant of fire made and used by someone whose name, date, and purpose are entirely unknown. It was found on a gentle east-facing slope, the kind of modest, sheltered ground where people have always tended to settle, cook, or gather.

The site came to light in 1986 during the laying of a Bord Gáis pipeline, the sort of infrastructure project that has, over the decades, inadvertently produced a significant proportion of Ireland's incidental archaeological record. A small area of burnt material, roughly half a metre in diameter, was identified and recorded in fieldnotes by M. Gowen. Beyond that, the record is thin. No dating, no associated finds, no structure. Just the trace of heat applied to ground, preserved long enough to be noticed before the pipeline went in.