The example at Ballyphilip in County Limerick is modest enough in scale, measuring roughly 13 metres east to west and 11.5 metres north to south, but what makes it quietly remarkable is how thoroughly it avoided official notice for so long. It does not appear on any Ordnance Survey Ireland historic maps, meaning generations of cartographers passed over it entirely. It was only in 1986, when an aerial photographic survey based out of Bruff captured a circular cropmark on the ground below, that the monument was formally identified. Cropmarks appear when buried or earthwork features affect the growth of surface vegetation, leaving ghostly outlines visible only from altitude, and often only in dry conditions when soil moisture differences become pronounced.

The site sits within a larger complex of ring barrows, which suggests this corner of Limerick was a place of some significance during the prehistoric period, likely used repeatedly over generations as a landscape of burial and memory. The low-lying, wet pasture that surrounds the monument is threaded with land drains and watercourses, conditions that may have both obscured and, paradoxically, preserved the earthwork over the centuries. The aerial image catalogued as Bruff 15612 provided the initial identification, and subsequent orthoimagery, including an Ordnance Survey Ireland capture from between 2005 and 2012 and a Google Earth image from March 2017, confirmed the roughly circular earthwork still visible at ground level. The record was compiled by Alison McQueen and Vera Rahilly and uploaded in September 2020.

Access to the monument requires crossing private farmland, and the wet, drained pasture means the ground underfoot can be heavy going, particularly in autumn and winter. The earthwork itself is subtle rather than dramatic, the kind of feature that rewards patience and a willingness to read the landscape carefully. Looking for a low, circular rise with any hint of a surrounding depression is the most practical approach on the ground. The broader complex of ring barrows in the area suggests it is worth consulting the relevant Sites and Monuments Record entry before visiting, to build a fuller picture of what else lies nearby in this unassuming stretch of County Limerick farmland.