Standing in the pasture on the east-facing slope where it lies, a visitor would see only grass. The ringfort has effectively vanished from the surface of the land, leaving no visible trace that anything was ever there.

A ringfort, or rath, is one of the most common monument types in the Irish landscape, a roughly circular enclosure defined by an earthen bank and, typically, an external fosse or ditch, used as a farmstead and place of protection during the early medieval period. At Ballygarrane, the bank and its accompanying fosse survive only as a cropmark, a faint differential in vegetation growth that becomes legible from the air rather than the ground. An aerial photograph identified the circular enclosure in plan, the buried earthworks influencing what grows above them just enough to leave a shadow that a camera, at the right altitude and in the right season, can catch. The site is recorded under reference R523 in the Geological Survey of Ireland aerial photographic collection.

There is a quiet irony to a monument whose entire existence, at least to modern eyes, depends on being seen from above. The people who built and lived within the original enclosure could hardly have anticipated that the most legible record of their settlement would one day be a faint mark in a field of grass, visible only from a great height.