On the summit of a hill at Glenary in County Waterford, a low grass-covered mound sits quietly overlooking the Suir river valley. It is easy to walk past without a second thought, but the shape gives it away on closer inspection: a subcircular cairn, a prehistoric monument built from piled stone and now softened by centuries of turf growth, with a notably flat top roughly four metres across. That flattened crown is unusual, setting it apart from the more rounded profiles typical of such structures.

A cairn of this kind is generally understood as a prehistoric funerary or commemorative monument, stones heaped deliberately over a burial or as a marker in the landscape. This one measures approximately 7.1 metres north to south and 6.7 metres east to west at its base, and rises to between 0.4 and 0.7 metres, so it sits close to the ground rather than commanding the skyline. What it lacks in height it makes up for in placement. The choice of a hilltop with a clear line of sight northward across the Suir valley suggests the location was deliberate, the monument positioned to be seen, or to see, or both. The Suir valley was a significant corridor through the landscape in prehistory and well beyond, and structures placed along its ridgelines appear with some regularity across the region.