It was never marked, never named on a cartographic record, and its existence only came to light because of what could be seen from the air rather than from the ground. That particular invisibility is what makes it interesting: a monument that the usual documentary record simply missed.

The site was first identified as an earthwork complex from an oblique aerial photograph taken on 20 July 1968, part of the Cambridge University Collection of Aerial Photography archive, reference CUCAP AVT025. Aerial photography of this kind, which captures the landscape at an angle rather than straight down, is especially useful for revealing subtle earthworks, since low banks and ditches cast shadows that become legible in a way they rarely are at ground level. The linear earthworks were also visible on Ordnance Survey of Ireland orthoimages taken between 2005 and 2012, confirming that the features persisted and were not simply crop marks from a single dry season. The site lies approximately 400 metres north-east of the townland boundary with Millfarm, and a related enclosure sits 190 metres to the south-east on Hospital Hill. The record was compiled by Alison McQueen and Vera Rahilly and uploaded to the Sites and Monuments Record in November 2020.

Because the earthworks sit within improved pasture on a working farm, they are not a designated visitor site and access would require landowner permission. The trackway that runs through the area gives a sense of the immediate landscape, which is low-lying and well-managed agricultural ground with little to arrest the eye. Anyone with an interest in how aerial survey has reshaped our understanding of Irish archaeology will find this a useful example: the monument exists in the record almost entirely because someone looked down at the right moment on a July afternoon more than fifty years ago.