This one in Newtown, in the barony of Coshlea in County Limerick, was found by an energy company laying a gas pipeline. When Bórd Gáis Éireann conducted aerial photography along the Curraleigh West-Limerick route in November 1984, the survey captured something in a pasture field that no one had formally recorded before: a rectangular earthwork, sitting quietly in the northern quadrant of a cluster of monuments, and conspicuously absent from the Ordnance Survey six-inch maps that have guided Irish heritage researchers for well over a century.

The earthwork itself measures approximately 21 metres north to south and 35 metres east to west, and it is known primarily through what it leaves on the surface of the ground rather than through any physical investigation. Cropmarks, which appear when buried structures affect the growth of grass or crops above them, revealed its rectangular outline on a Digital Globe orthoimage taken between 2011 and 2013. An earlier Google Earth image from October 2006 showed only a faint trace. The site sits within a broader field system, suggesting it is one component of a more complex pattern of past land use in this part of Limerick. The record was compiled by Fiona Rooney and uploaded to the national monuments database in September 2021, meaning it is a relatively recent formal addition despite having first appeared in aerial photography nearly four decades earlier.

Because the earthwork is in private pasture and has never been excavated or formally opened to the public, access would require landowner permission. There is no visitor infrastructure, and nothing is likely to be visible at ground level; the features that define this site are only legible from altitude or through careful comparison of aerial imagery over time. Those with a genuine interest in the monument cluster here would do well to consult the National Monuments Service database, where the BGE pipeline maps and orthoimage references provide the clearest picture available of what lies beneath this otherwise unremarkable-looking field.