The ring barrow at Garryduff is not the sort of monument that announces itself. Its entire raised centre measures just 3.2 metres in diameter, its encircling bank rises barely nine centimetres above the surrounding field, and the shallow ditch between them, known as a fosse, dips only seven centimetres at its deepest. Ring barrows are prehistoric funerary monuments, typically consisting of a central mound or platform enclosed by a circular ditch and an outer earthen bank, and they survive in Ireland in considerable numbers, though many are in precisely this condition: hovering at the margins of visibility, neither dramatic enough to be fenced off nor destroyed enough to have vanished entirely.

The Archaeological Survey of Ireland recorded and measured this monument in 2008, with the compiled record later prepared by Alison McQueen and Vera Rahilly and uploaded in October 2020. The survey noted that the ground here is rough, level pasture cut through by land drains and watercourses, which goes some way to explaining why the monument is currently waterlogged. The site sits approximately 200 metres to the west of the townland boundary with Moanoola, and a second ring barrow lies just seven metres to the north, suggesting the two formed some kind of associated funerary grouping. Neither monument appears on Ordnance Survey historic mapping, meaning they escaped the attention of nineteenth-century cartographers entirely, perhaps because even then there was too little to see at ground level.

The clearest views of this monument come not from standing beside it but from above. Aerial and satellite orthophotos, including OSi imagery taken between 2005 and 2012, Digital Globe images from 2011 to 2013, and a Google Earth image dated 18 November 2018, all show the barrow as a faint circular cropmark, the kind of subtle tonal difference in vegetation that only registers when you know what you are looking for. On the ground, the waterlogging makes access awkward in wetter months, and the near-invisible relief means there is little to see without the survey measurements as a guide. The neighbouring ring barrow to the north, catalogued separately as LI025-034, is worth locating at the same time, since the two monuments together offer a slightly better sense of how this quiet corner of County Limerick was once used for the dead.