The monument is subcircular in plan, measuring roughly 37 metres across its northeast to southwest axis, and its boundaries are now a patchwork of different periods and materials sitting one on top of another. An earthen bank, the original enclosing element, has been partly buried or superseded by a later field wall along the southeastern to southwestern arc, while a scarp, a low earthen slope rather than a raised bank, takes over as the defining edge along the southwestern and northeastern stretches. Across other sections, nothing at all is visible at the surface.

Enclosures of this general type are among the most common monuments in the Irish landscape. They range in date from the prehistoric period through to the early medieval, and were variously used as farmsteads, animal enclosures, or spaces with ritual significance. Without excavation it is rarely possible to assign a precise function or date to any individual example. What makes the Ballycasey site quietly interesting is how thoroughly it has been absorbed into the working farm landscape around it. Later field walls do not simply run nearby; they cut directly across the monument at both the northeast and southwest, treating the older earthwork as raw material or simply ignoring it. The description of the site draws on the Archaeological Inventory of County Galway, Vol. II, covering North Galway, compiled by Olive Alcock, Kathy de hÓra, and Paul Gosling and published in 1999.

For anyone curious enough to seek it out, the site sits in ordinary grassland with no formal marker or managed access. The surviving earthworks are subtle, and the overlay of agricultural boundaries means some patience is needed to read the enclosure's shape on the ground. The scarp sections, where the land simply drops away rather than rising into a bank, are easy to walk past without recognising them for what they are.