At Belville in County Sligo, a circular earthwork measuring roughly 24 metres in diameter can still be traced on the ground, but the structure itself is gone, levelled by the gradual industrial appetite of the ridge on which it once stood.

The enclosure was recorded on the 1837 edition of the Ordnance Survey six-inch map, meaning it was still sufficiently visible in the early nineteenth century to be worth marking. It sat close to the north-western edge of a north-west to south-east ridge, a position that would have given it some natural elevation and prominence in the landscape. That same ridge, however, proved attractive for another reason entirely: its sand. Extensive quarrying over the years removed not just the raw material but effectively erased whatever earthen banks or features had defined the enclosure. Circular earthworks of this kind are often the remains of a ringfort, a type of enclosed farmstead common throughout early medieval Ireland, typically defined by one or more banks and ditches and serving as a defended homestead for a farming family. Whether that was the function here, the notes do not say with certainty, and the physical evidence is no longer present to help.

What remains is the faint geometry of a circle, readable more as an absence than a presence, a place that once meant enough to someone to build, and enough to a cartographer to record, but which the working landscape has since consumed almost entirely.