This stone monument measures 7.1 metres by 6.2 metres and features an unusual architectural detail; a central altar that visitors would have accessed through a passage entering from the south side. What makes this cairn particularly intriguing is the primitive stone cross that crowns its summit, suggesting the site may have been adapted for Christian use long after its original construction, a common practice throughout Ireland as pagan sites were repurposed for the new faith.

Just to the north-northwest of the cairn lies another structure that adds to the mystery of this archaeological complex. This drystone-walled building, measuring 3.4 metres by 2.5 metres and standing up to 65 centimetres high, appears to have been carefully positioned in relation to the main cairn. The proximity and alignment of these structures suggest they were part of a larger ceremonial or religious landscape, though their exact relationship and purpose remain subjects of archaeological speculation.

The site represents layers of Irish history, from prehistoric burial practices to early Christian adaptation of sacred spaces. The combination of the cairn with its internal altar and southern passage, the later addition of the cross, and the adjacent walled structure creates a palimpsest of human activity spanning potentially thousands of years. Such sites are invaluable for understanding how successive generations of Irish people have marked and remarked the landscape with their beliefs and rituals.