Measuring approximately 20 metres across and rising 3.5 metres high, this prehistoric monument commands spectacular views across the lough and the surrounding mountainous landscape. While its exact age and original purpose remain uncertain, such cairns were typically built during the Bronze Age as burial monuments for important individuals or to mark significant boundaries in the landscape.

The cairn's prominent position would have made it visible for miles around, serving as a landmark for ancient communities navigating these hills. Today, it serves a different but equally symbolic purpose; a modern cross has been erected atop the ancient stones, creating an interesting blend of prehistoric and Christian heritage at this windswept location. This layering of sacred significance across millennia is common throughout Ireland, where ancient pagan sites were often repurposed or incorporated into Christian tradition.

The monument was documented as part of the Archaeological Survey of County Donegal, a comprehensive catalogue of the county's field antiquities compiled in 1983. From this elevated vantage point, visitors can appreciate not just the engineering feat of hauling stones up the hillside thousands of years ago, but also why our ancestors chose such dramatic locations for their monuments. The panoramic views across Lough Swilly would have held both practical and spiritual significance for the cairn's builders, offering sight lines for communication and defence whilst placing the dead closer to the sky.