It leaves no upstanding walls, no visible earthworks, no obvious reason to stop and look. What it leaves instead is a ghost, a pattern pressed into the grass by the buried remains below, readable only from the air and only under the right conditions.

The enclosure was identified in January 2003, when the Archaeological Survey of Ireland carried out low-altitude oblique aerial photography over the area. What their photographs revealed, catalogued as ASIAP 352, 21, was a substantial bivallate cropmark, meaning the buried remains of not one but two concentric enclosing walls or banks, their outlines showing up as differential growth in the vegetation above. Cropmarks of this kind form when buried stone or compacted soil affects how deeply roots can grow, causing the grass or crop above to respond differently to drought or moisture. The enclosure is roughly circular in plan, measuring approximately 140 metres on its north-west to south-east axis and around 120 metres north-east to south-west. That scale, combined with the double-walled form, suggests something of significance once stood here, though no excavation has been recorded and its date and function remain open questions. Interestingly, the 1897 edition of the Ordnance Survey 25-inch map shows a small, roughly oval pond immediately to the north-west of the site, but the enclosure itself goes unrecorded, suggesting it was already invisible at ground level by the time Victorian surveyors passed through. The monument has since been confirmed as a faint cropmark on several later aerial orthophotos, including imagery captured between 2005 and 2012 by Ordnance Survey Ireland, Digital Globe imagery from 2011 to 2013, and a Google Earth image dated 25 March 2017.

The site sits in low-lying, gently undulating pasture, and there is nothing at ground level to mark it out. A visitor walking the field would notice nothing unusual underfoot. The cropmark is best appreciated through the aerial images compiled by the Archaeological Survey of Ireland and available through the National Monuments Service records, where the concentric rings become legible in a way that standing in the field never quite allows. Dry summers tend to sharpen cropmarks considerably, so later-season satellite imagery is sometimes more revealing than earlier captures. The record was compiled by Alison McQueen and Vera Rahilly and uploaded in September 2020, and the site remains unexcavated, its interior and dating unconfirmed by any ground investigation.