Yet somewhere in that turned earth, a small cluster of worked flint pieces lies scattered, the quiet remnant of prehistoric human activity that would have gone entirely unnoticed had it not been for a systematic field-walking survey carried out in 1983.

Field-walking is exactly what it sounds like: archaeologists or surveyors moving methodically across disturbed ground, eyes down, looking for objects brought to the surface by the plough. Flint does not occur naturally in Wicklow's local geology, so its presence in any quantity immediately signals human transport and use. Worked flint, shaped deliberately into tools or blades, narrows that signal further. The scatter at Ballyrogan was recorded with the involvement of Professor F. Mitchell and Professor P. Woodman, two figures closely associated with Irish prehistoric and Mesolithic studies. The site sits roughly four kilometres from the coast, which places it within a range that prehistoric communities using coastal and inland resources might plausibly have moved across. How old the flint is, and what precise activity it represents, the material alone cannot say with certainty, but lithic scatters of this kind are often the only trace left by people who built nothing permanent and buried nothing formally.

There is no monument here, no marker, and nothing visible to a passing eye. The field looks like a field. That is, in a way, the point.