The site is recorded as a lithic scatter, meaning a concentration of worked stone found on or near the surface, and what makes it remarkable is the sheer span of time it represents, from the Mesolithic period through to the Bronze Age, a stretch of human activity running to several millennia.

The material came to light in 1990 during a systematic fieldwalking survey of the Barnageeragh area. Fieldwalking is precisely what it sounds like: archaeologists move in organised lines across open ground, scanning the ploughed or disturbed surface for fragments of worked stone, pottery, or other material. What they found here was a large quantity of flint debitage, the waste chips and flakes produced when flint is knapped to make tools, along with a low density of retouched pieces, meaning flints that had been deliberately shaped or sharpened for use. The debitage tells us people were making tools on or near this spot; the retouched pieces suggest some of those tools were finished and kept. Preliminary analysis of the collected material was published by Guinan in 1992, and the site later formed part of a broader fieldwalking survey by Doyle in 2003.

Barnageeragh is a coastal townland on the northern fringes of County Dublin, and the site sits within agricultural land that is not formally open to the public. There is no monument marker, no interpretive panel, and nothing visible at ground level to signal what lies beneath. The significance of a lithic scatter tends to register only through accumulation, the patient counting and categorising of fragments gathered across a field. For anyone with a general interest in Irish prehistory, the site is best appreciated as part of the wider archaeological landscape of the Dublin coastline rather than as a destination in itself. The records compiled by Geraldine Stout and updated by Christine Baker form part of the broader effort to document such low-visibility sites before agricultural activity, development, or erosion removes any trace of them entirely.