You cannot see it standing at the field edge. It does not appear on any Ordnance Survey historic map. The only way it reveals itself is from the air, and only under the right conditions, when variations in soil moisture and crop growth betray the outline of a structure that has otherwise left no trace on the landscape.

The site was first identified by Celie O'Rahilly, an archaeologist working for Limerick Corporation, who spotted it as a cropmark on aerial photography taken in 1985 as part of the Ordnance Survey Ireland series (Ref. OS2/746, Photo No. 0793). Cropmarks form when buried archaeology affects how plants grow above it: ditches retain moisture and produce lusher growth, while buried walls or compacted ground stress the crop, and the difference, invisible at ground level, can be striking when seen from above. What O'Rahilly observed was a large oval shape, measuring approximately 37 metres on its northeast to southwest axis and 31 metres northwest to southeast. That is a substantial enclosure, broadly in the range associated with early medieval ringforts or earlier prehistoric settlements, though without excavation its date and function remain unknown. The same oval is still detectable decades later, appearing on Digital Globe aerial imagery from 2011 to 2013 and again on a Google Earth image captured on 19 November 2019. A cluster of linear features to the east, possibly the remnants of drainage channels, is also visible in the aerial record.

There is nothing to see at ground level, and the site sits on private farmland with no public access or signage. Its interest lies almost entirely in what the aerial images reveal, and those are accessible through Google Earth by anyone curious enough to look. The coordinates place it in the flat ground north of Limerick city, in an area that would historically have been prone to seasonal flooding given its proximity to the Shannon floodplain. Researchers Alison McQueen and Vera Rahilly compiled the site record, uploaded in June 2020, and the entry remains one of many quiet anomalies logged by archaeologists who spend their working hours scanning aerial photography for the faint signatures of things people built and then forgot.