The one at Corbally in County Galway asks rather more of the imagination. Barely legible in the level grassland, it survives as little more than a degraded bank tracing a circle roughly 37 metres across, the kind of feature that a casual walker might cross without registering at all.

A rath, to use the Irish term, was a circular enclosure defined by one or more earthen banks and ditches, typically constructed during the early medieval period and used as a farmstead or high-status domestic settlement. Thousands were built across Ireland, and they remain one of the most common archaeological monument types in the landscape. This example at Corbally belongs to that broad tradition, though time and agricultural activity have reduced it to something closer to a trace than a structure. The circular form, 37 metres in diameter, can still be made out, but the bank that once defined it has been worn down to the point where it barely registers above the surrounding ground.