That is not carelessness on the visitor's part; it is simply the nature of the place. The barrows at Lissard are so low and so subtle that their most reliable marker is a slightly wetter ring of ground where a ditch once ran, the grass above it growing a little greener, a little fresher, than the surrounding field. The monuments are, in a sense, more legible to the soil than to the eye.

A barrow is a low earthen burial mound, typically of prehistoric origin, often encircled by a shallow ditch and occasionally an outer bank. What makes Lissard unusual is the sheer concentration of them. This single townland in southwest County Limerick contains three separate barrow cemeteries lying adjacent to one another, with the cluster in the southwestern corner alone accounting for eleven examples spread across an area roughly 240 metres north to south and 230 metres east to west. None of them appear on historic Ordnance Survey Ireland maps, which suggests they were either too inconspicuous to record or were already lost beneath agricultural activity by the time surveyors arrived. In 1934, the archaeologist S. P. Ó Ríordáin visited Lissard and documented what he found, publishing his observations in 1936. His description remains the sharpest account of the site: mounds so slight that one might easily walk over them without noticing, their presence betrayed chiefly by the damp circular depressions of their ditches. The following year, in 1935, Ó Ríordáin excavated one barrow in the cemetery, located about 65 metres to the northwest of this particular example, though the findings from that work are the only ones available for the group.

By the time satellite imagery was taken between 2011 and 2013, no surface remains were visible at all. A faint circular cropmark, approximately four metres in diameter, did appear on a Google Earth image from September 2019, hinting at what lies just beneath the turf. For anyone making their way to Lissard, the practical reality is that there is little to see in the conventional sense. The value is in knowing what the landscape is carrying; a spread of prehistoric burial monuments, mostly unexcavated, unmarked on old maps, and still doing what Ó Ríordáin noted almost ninety years ago, quietly announcing themselves through nothing more dramatic than a patch of greener grass.