A midden, essentially a prehistoric rubbish deposit, this one is composed chiefly of cockle and mussel shells, with periwinkles and fragments of stone scattered throughout. It runs intermittently along roughly 45 metres of exposed cliff, and its thickness varies considerably, from as little as four centimetres to as much as thirty, buried beneath an average of 80 centimetres of sand.

What makes the deposit geologically interesting is its relationship with the layers beneath it. At its southern end, the midden sits directly on top of a black sod layer, the compressed remnant of an old soil surface, suggesting the shellfish were discarded directly onto exposed ground. Elsewhere, deposits of sand lie between that same sod layer and the midden itself, and lenses of sand also occasionally intrude within the midden, indicating that accumulation was not continuous but interrupted by episodes of wind-blown or tidal sand movement. This kind of stratigraphy, the sequence of layered materials, can help archaeologists understand how a site was used over time and how the surrounding landscape shifted. The site is the most southerly of several middens identified in the Dooaghs area, suggesting that shellfish gathering was a repeated and probably sustained activity along this stretch of the Iveragh Peninsula.