It is not much to look at, barely ten centimetres deep and two metres wide, but that modest strip of debris is a midden, the accumulated refuse of people who ate here, probably over a long period, and simply left the evidence at the water's edge. Middens, essentially ancient rubbish heaps composed largely of food waste, are among the most direct records of everyday life that archaeology uncovers. They are rarely dramatic, but they are honest.

This particular deposit lies to the south of a tower at Carrigrenan, a site recorded under the reference CO075-02402. The shells are mostly oyster, which fits the broader Cork Harbour context, where oysters were a staple food source for communities living along tidal inlets from prehistoric times well into the post-medieval period. The midden is likely only partially visible; surveyors have noted that it may extend further inland beneath grass cover, meaning the full extent of the deposit is unknown. That ambiguity is itself telling. What appears to be a modest coastal scatter could, once the grass is pulled back in the imagination, represent a considerably larger and older accumulation of meals eaten and forgotten.