On the eastern slope of Boston Hill in County Kildare, at an elevation of around 538 feet above sea level, a cluster of archaeological features sits quietly beneath what was once the surface of a working quarry. The site came to light not through any planned excavation but through the kind of accidental archaeology that quarry expansions occasionally force into the open, when topsoil-stripping in 2001 exposed deposits across seven distinct areas of the hillside at Drinnanstown.

The most thoroughly examined of these, in the north-eastern part of the site, covered roughly 3,600 square metres and yielded ten features spread at considerable distance from one another. The arrangement suggests a habitation site rather than any single-purpose structure, with burnt soil patches, pits, and post-holes pointing to domestic or light industrial activity. A single piece of iron slag recovered from one pit, located about 32 metres north of the southern cluster, hints at small-scale metalworking, though the evidence is fragmentary. Burnt stake- or post-holes found further north add to the impression of a site used over time, in different ways and perhaps across different periods. The remaining six areas were left undisturbed at the time of investigation, with the archaeologists noting that quarry works were not expected to reach them for around three decades, leaving open the possibility of preserving them in place rather than excavating them.