Most walkers would cross it without a second glance, mistaking the slight rise underfoot for a trick of the terrain. It is, in fact, an ancient enclosure, and its quiet persistence in an ordinary field is precisely what makes it worth pausing over.

The enclosure measures roughly 23 metres north to south and 22 metres east to west, making it approximately square, though it is classed as roughly rectangular. Three sides, the northern, western, and southern, are defined by a low earthen bank. An enclosure of this kind is a common feature of the Irish rural landscape, a boundary built up from earth rather than stone, used across many centuries for purposes that could range from settlement and farming to ritual or stock management. Here the bank is modest even by those standards: its internal height reaches only about 0.3 metres, its width around 1 metre, and its external face stands just 0.1 metres above the surrounding ground. The eastern side appears to lack a comparable bank, which may indicate an entrance, a later disturbance, or simply the effects of centuries of agricultural activity. The site sits close to two other recorded monuments in the same townland, one roughly 30 metres to the northwest and another about 10 metres to the southwest, suggesting this part of Greenmount was once a more densely occupied or organised landscape than its present pastoral calm implies.

The enclosure is set on a ridge, so approaching from lower ground gives the best sense of how the site was positioned to overlook its surroundings, even if that advantage is subtle today. Because the earthworks are so low, they are easiest to read in raking light, particularly on a winter afternoon when the sun sits low and long shadows pick out ground features that summer obscures entirely. The two neighbouring monuments recorded nearby are worth locating on the map before visiting, as understanding the enclosure in relation to them gives a clearer picture of the wider archaeological cluster. Access is across private farmland, so landowner permission should be sought before approaching.