This is a boulder-burial, a monument type found almost exclusively in the south-west of Ireland, in which a substantial capstone is raised just clear of the ground on a small number of upright supports. Unlike the more familiar portal tombs or wedge tombs, boulder-burials are low, deliberate, and oddly understated; the stone does not reach for the sky so much as press firmly towards the earth.

The Keamore example is a well-preserved specimen. The capstone is sub-rectangular with a flat upper surface, measuring 2.55 metres by 1.55 metres and roughly 0.6 metres thick, a slab of considerable weight and solidity resting on its three support stones with quiet assurance. Boulder-burials belong broadly to the Bronze Age, and while direct evidence of burial deposits is often thin or absent, the form is generally understood to have served a funerary or ceremonial function. Their concentration in Cork and Kerry suggests a distinctly regional tradition, one that developed alongside but separately from the megalithic forms more common elsewhere in Ireland. The positioning of this particular monument, on a slope looking out over a lough, follows a pattern seen at other prehistoric sites where water features and elevated ground seem to have carried some significance for the communities who built there.