The structure consists of a heap of stones, now partly covered with grass on its upper surface, and appears to be built from flat slabs of loose stone. Whilst the edges show signs of damage over time, the cairn's prominent position offers spectacular views across the surrounding landscape in every direction.

The true origins of this stone monument remain somewhat uncertain. It's possible that the cairn dates back to prehistoric times, serving as a burial monument or territorial marker for ancient communities who once inhabited this region of northwest Ireland. However, the site's strategic location also made it ideal for more recent use as a trigonometrical station; a fixed surveying point used for mapping purposes. The existing stone structure may have been built specifically for this surveying function, or perhaps an older cairn was simply repurposed when cartographers needed a reliable marker on this commanding hilltop.

Located near Cluain Tsalach in An Machaire Beag, this intriguing feature forms part of Donegal's rich archaeological landscape. Whether it represents an ancient ritual site or a more mundane surveying marker, the cairn stands as a testament to the various ways humans have marked and measured this dramatic Irish terrain throughout history. Its position on the southeastern edge of the high ground continues to draw visitors who come both for the archaeological interest and the sweeping vistas that stretch out from this elevated vantage point.