Roughly circular, measuring six metres east to west and three metres across, and just over half a metre deep, it was not especially large. What makes it notable is where it was cut: directly into a fulacht fia, a type of prehistoric cooking or industrial site typically identified by a mound of fire-cracked stone and a water trough, found widely across Ireland and generally dated to the Bronze Age. Someone, at some later point, chose this already ancient spot to dig a well, and added a timber platform along its south-western edge, presumably to make drawing water easier.

The well came to light during archaeological investigations carried out ahead of construction of the N9/N10 Kilcullen to Waterford road. Excavation work at Busherstown was part of a broader programme of investigations running between Prumpelstown and Powerstown, and the findings were set out in a 2009 report by G. Breen for Headland Archaeology. The relationship between the well and the fulacht fia beneath it raises the kind of question that rarely gets a clean answer: was the earlier mound still a visible feature in the landscape when the well was dug, something that marked out the spot as significant, or had it long since flattened into the ground, its origins forgotten? The timber platform suggests the well was in regular use at some point, a practical feature for a working farm or settlement, even if the deeper layer of prehistory beneath it went unrecognised for centuries.