This wall, marked on the third edition of the Ordnance Survey 6-inch maps, spans roughly 30 metres if measured as a straight line from end to end. What makes it particularly notable is the incorporation of a large erratic boulder near its eastern terminus; a massive stone deposited here by glacial movement thousands of years ago, now seamlessly integrated into the human-built structure.

The construction technique reveals careful craftsmanship despite the wall’s mysterious purpose. Built as a double line of stones set tightly against one another, the structure varies in width from 0.7 to 1.1 metres. Each stone was deliberately placed flush with its neighbours, creating a solid barrier that has endured in this landscape of blanket bog and rocky outcrops. The precision of the stonework suggests this was no hastily assembled field boundary, but rather a structure of some significance to those who built it.

Archaeological surveys have documented this enigmatic enclosure at Kilclooney More, yet its original function remains unclear. Whether it served as a ceremonial space, a defensive structure, or had some agricultural purpose, the wall stands as a testament to the long history of human activity in this part of Donegal. The site forms part of the county’s rich archaeological heritage, documented in the comprehensive 1983 survey that catalogued field antiquities from the Mesolithic period through to the 17th century.