On a hilltop in Derrynagarragh, County Westmeath, a prehistoric burial mound sits so thoroughly worn down by time and overgrowth that when a survey team visited in 2015, high ungrazed grass had swallowed whatever remained, and nothing was visible at the recorded location. The landowner, who knew perfectly well that something was supposed to be there, confirmed he had never been able to make it out himself. The monument exists, in a sense, more as an entry in the record of the landscape than as anything a person could point to.

The mound was more legible when first formally noted in 1982. At that point, it was recorded as a small bowl barrow, a type of prehistoric burial monument typically characterised by a circular mound surrounded by a ditch, common across Ireland and Britain from the Bronze Age onwards. That classification was later revised: because no evidence of a surrounding ditch could be found, the site is more accurately described as a simple mound barrow with a flattened top, roughly ten metres in diameter and somewhere between fifty and seventy-five centimetres high. An old field boundary cuts through the northern portion of the mound in a roughly west-northwest to east-southeast direction, further eroding whatever shape the original construction once had. Despite all this, the hilltop setting retains a certain logic. The mound overlooks the Yellow River to the north-east and a second river to the south-west, the latter threading through Bishop's Lough and a chain of smaller lakes approximately five hundred metres to the south. It is the kind of elevated position that was deliberately chosen again and again in prehistoric Ireland for monuments of this kind, commanding sightlines across water and lowland in several directions. Trees now interrupt much of that view, but the underlying topography still makes clear why someone, a very long time ago, chose this particular rise.