Six of these mysterious structures, ranging from modest 1.6-metre mounds to substantial 4.65-metre heaps of beach cobbles, sit exposed on a narrow sand spit that stretches southeast to northwest between the estuary and the open bay. Rising up to a metre above the sand, these roughly circular cairns were revealed when coastal erosion, accelerated by grazing cattle and stream flow from the nearby creek, stripped away the protective dune that had hidden them for centuries.

The cairns form part of a larger archaeological complex that includes a circular stone hut site positioned just 11 metres inland. Together, these features occupy a compact area of about 20 to 25 square metres along the foreshore, suggesting this was once a small but significant settlement or ritual site. The presence of scattered cockle, mussel, and razor shells throughout the exposed area hints at the maritime culture of the people who built these structures, though modern debris now mingles with these ancient remains.

Discovered and recorded by Edward Pollard in September 2010, these cairns remain something of an enigma; their exact purpose and age are still unclassified by archaeologists. What is certain is that they represent another fascinating piece of Ireland's coastal heritage, one that nature has chosen to reveal after keeping it hidden beneath the dunes for generations. The site serves as a poignant reminder of how Ireland's dynamic coastline continues to yield archaeological treasures, even as erosion threatens to wash away the very features it exposes.