No cartographer marked it, no field name preserved it, yet the ground itself holds the shape: a raised, D-form outline in the grass at Garrynalyna that has quietly persisted through decades of agricultural use.

The earthwork came to official attention not through ground survey but through aerial photography commissioned during the construction of the Bórd Gáis Éireann Curraleigh West-Limerick gas pipeline. Photographs taken on 3 November 1984, at a scale of 1:10,560, revealed a raised sub-circular area that archaeologists have since classified as a possible barrow. A barrow, in broad terms, is a mounded earthwork typically associated with burial, common across Ireland from the Bronze Age onward, though the precise date and function of this example remain unconfirmed. The monument sits in pasture roughly 105 metres west of the townland boundary with Knockaunacurragha, and a separate enclosure lies approximately 55 metres to the south-east. Later satellite imagery, including Digital Globe orthoimages taken between 2011 and 2013 and subsequent Google Earth coverage, confirmed the D-shaped raised area is still legible from the air, even if it reads as little more than a gentle undulation at ground level. The record was compiled by Fiona Rooney and uploaded to the national monuments database in November 2021.

Because the site sits in private farmland and pasture, access would require the landowner's permission. There is no formal path or signage, and the earthwork is not the kind of feature that announces itself on foot. The best way to orient yourself before any visit is to study the Google Earth orthoimages referenced in the monument record, which give a clearer sense of the D-shaped outline than walking the field is likely to. The nearby enclosure to the south-east is separately recorded and may be worth noting as context, suggesting this is not an isolated feature but part of a broader, if poorly understood, pattern of early activity in the townland.