A burnt mound is one of prehistoric Ireland's most quietly puzzling features: a low spread of fire-cracked stone and charcoal-blackened earth, the accumulated debris of repeated high-temperature activity that may have served for cooking, bathing, hide preparation, or purposes we can no longer name with confidence. The example uncovered at Cherryville in County Kildare was modest even by the standards of the type, measuring roughly 9 metres by 7 metres and only 0.1 metres thick, a thin skin of burnt material pressed almost imperceptibly into the ground.

Excavation by Thaddeus C. Breen revealed a site that, for all its slightness, had some intriguing layers to it. Beneath the burnt spread lay a compact dark brown clay designated C109, which extended further to the north than the burnt material itself, and beneath that, to the south, a thin wedge of peat. The burnt spread and C109 together yielded a small number of waste flint flakes, the kind of debitage left over from knapping stone tools, and the clay layer also produced a stone axehead. Whether these objects were associated with the burning activity itself or represent an earlier episode of occupation on the same ground is difficult to say. A shallow subrectangular pit, about 1.23 metres long and 0.7 metres wide with a maximum depth of only 0.1 metres, was the most defined cut feature on the site. It had been filled with a light grey to white silty clay containing burnt limestone, and at its base, side by side in the centre, were two stake-holes; paired stake-holes of this kind sometimes indicate a simple frame or support structure, though their exact function here remains open. To the east, a modern ditch had been backfilled in recent years, a reminder that even shallow prehistoric deposits can sit in uneasy proximity to the altered landscapes of the present.