This low mound at Cappaghkennedy sits on a gentle but prominent rise in semi-karst rough pasture, its subcircular form measuring roughly six metres east to west and just under six metres north to south, rising between 0.6 and 0.8 metres above the surrounding ground. Partly softened by moss and grass, with a scatter of loose stone on its south-south-east side, it has the quietly unassuming look of something that could be walked past without a second thought. The wide views it commands to the west, north, and north-north-east suggest the rise itself was not an accidental choice for whoever built here.

A cairn, in this context, is essentially a deliberate heap of stones raised as a marker or monument, most often associated with prehistoric funerary or ritual activity. This one sits within what has been identified as an extensive multiperiod field system, meaning the land around it has been divided, worked, and reworked across several different periods of occupation. The site was noted on Tim Robinson's map of the Burren, published in 1977, which documented much of the region's complex archaeology at a time when many such features were only beginning to be systematically recorded. Within roughly two hundred metres of this cairn alone there are at least two further cairns, an enclosure, a hut site, and a wedge tomb. A wedge tomb is a megalithic monument of the late Neolithic and early Bronze Age, typically consisting of a roofed stone gallery that narrows toward one end. That such a concentration of monuments survives in close proximity speaks to how densely this part of the Burren was once inhabited and organised, the limestone terrain preserving surface features that elsewhere might have been ploughed away long ago.