This is a ring-barrow, a low prehistoric burial monument defined not by dramatic stonework but by a modest encircling scarp of earth, and it takes a certain quality of attention to read it correctly in the landscape.

A ring-barrow typically consists of a low earthen bank or scarp enclosing a central area, often covering or marking a burial from the Bronze Age or Iron Age. The Cloonomra example is small, measuring 8.5 metres in overall diameter, with an interior space of roughly 5 metres that dips very slightly, only about 25 centimetres below the surrounding ground. The encircling scarp survives in a partial arc running from the north-east around to the north-west, varying in height from 35 centimetres to just over a metre. A field boundary has cut across the northern side, truncating what would once have been a complete ring. The monument was already considered significant enough to be marked on the Ordnance Survey six-inch map of 1840, recorded with hachures, the small radiating lines cartographers used to indicate rising ground or earthwork features. It sits on a ridge with wide views in all directions, which is entirely consistent with how prehistoric communities across Ireland positioned their burial monuments, choosing elevated ground that was visible from a distance and from which the broader territory could be surveyed.