This is a fulacht fia, a type of monument found in extraordinary numbers across the Irish countryside, most dating to the Bronze Age. The term refers to a mound of heat-shattered stone that accumulated beside a water trough, the byproduct of a process in which stones were heated in a fire and then dropped into water to bring it rapidly to the boil. What the boiling water was used for, whether cooking, bathing, textile processing, or something else entirely, remains a matter of genuine debate among archaeologists.

The eastern fulacht fia at Inchagreenoge was excavated by Kate Taylor as part of a significant infrastructure project, Bord Gáis Éireann's Pipeline to the West, which gave archaeologists the opportunity to investigate a long corridor of landscape that would otherwise have remained unexamined. The excavation, registered under reference 02E0899, revealed a spread of burnt material roughly 9.5 metres in diameter and no more than 0.15 metres thick. Beneath that shallow mound lay a sub-rectangular trough, the key functional element of the site, lined with timber planks and stakes to hold water. The western edge of the site sat at the margin of a low-lying boggy area, which would have provided a ready water source, while the steep hill immediately behind it gave the spot a quietly purposeful geography.

Because the site was uncovered during pipeline construction rather than as part of a standing monument, there is nothing to see above ground today. The value lies in knowing that this stretch of Limerick countryside was once a working landscape, actively used by Bronze Age communities in ways that are only legible through careful excavation. The excavations.ie database, where the original site record compiled by Denis Power was uploaded in August 2012, remains the best starting point for anyone wanting to follow up on the findings in more detail.