This stone monument, measuring roughly 17 metres across, rises between 1.5 and 2 metres high with its distinctive flat top; a feature that may be the result of its later use as a trigonometrical station for mapping surveys. The cairn consists of loose stones carefully arranged in a circular pattern, though its current disturbed state makes it difficult to determine its original form with complete certainty.

Historical records from W.F. Kinahan's 1889 survey mention a kistvaen, a type of stone burial chamber, associated with this site, though no trace of it remains visible today. The absence of this feature could be attributed to the cairn's modification for surveying purposes, or perhaps the passage of time has simply obscured what was once there. The site's location in Gortcally, Meentaghconlan, places it within a landscape rich with prehistoric monuments, suggesting this area held particular significance for ancient communities.

What makes this cairn particularly striking is its commanding position on the hilltop, offering extensive views across the mountainous terrain of Donegal. Such elevated locations were deliberately chosen by prehistoric peoples, serving multiple purposes; from burial sites and territorial markers to ceremonial gathering places. While we cannot definitively date this monument without excavation, similar cairns throughout Ireland typically date from the Bronze Age through to the Iron Age, representing thousands of years of ritual practice and landscape modification by our ancestors.