This ring-barrow in the townland of Raheen, in the Coshma barony of County Limerick, was never recorded on the historic Ordnance Survey Ireland maps at all, yet it turns up clearly enough in orthoimagery from 2005 to 2012, faintly on a Google Earth image from April 2006, and then not at all on more recent imagery from 2020. Its visibility, in other words, depends entirely on ground conditions, seasonal moisture, and the angle of light caught by a camera mounted on an aircraft or satellite. The monument itself has not moved; it is the evidence for it that flickers in and out.

A ring-barrow is a low earthen burial mound surrounded by a circular or oval ditch and bank, typically dating to the Bronze Age or early Iron Age, and used to mark the graves of the dead in a way that separated and distinguished them from the landscape of the living. This particular example, catalogued as LI031-177002-, is oval in plan, measuring roughly ten metres north to south and seven metres east to west, dimensions recorded when it was identified during the Bruff aerial photographic survey of 1986, reference Bruff 35.02, AP 4/3644. What makes its situation more striking is that it does not sit in isolation. It is one of nine ring-barrows clustered within a 200-metre radius, forming what archaeologists classify as a ring-barrow cemetery, a grouping that suggests deliberate, repeated use of this ground for burial across a considerable span of time. The site lies on flat, wet pasture, approximately 95 metres south-southeast of the townland boundary shared with Rockbarton and Grange, and about 1.5 kilometres west-northwest of Lough Gur, one of the most archaeologically dense lakeside landscapes in Ireland.

The site sits on working farmland and is not formally accessible to visitors, so any approach would depend on landowner permission. Because the monument's visibility is so closely tied to soil moisture and seasonal conditions, the waterlogged pasture that obscures it in dry summers is precisely the environment that brings it into relief in wetter months, when differential drainage above a buried feature can produce the faint crop or soil marks that aerial survey relies upon. There is nothing to see at ground level in any conventional sense; the reward here is conceptual rather than visual, the knowledge that beneath an ordinary-looking field lies one node in a Bronze Age burial landscape that cartographers, for whatever reason, never thought to record.