At Kincullia in County Galway, a circular rath sits on a slight rise in grassland, its presence now reduced to a low earthen bank curving from the north-east, around the east, and down to the south. The rest of the circuit is gone, clipped and cut by field boundaries that have slowly colonised the monument over centuries of farming.

A rath is an early medieval enclosure, typically dating from roughly the fifth to the twelfth century, built from a raised earthen bank and used as a farmstead or place of status. This one measures approximately forty metres in diameter, which falls within the ordinary range for such sites, though ordinary is perhaps the wrong word for something that has endured in any form at all. Two field boundaries now bisect the western side of the monument, one running north-east to south-west and clipping the rath directly, the other running north-west to south-east just beyond it. The effect is that the surviving arc of bank exists in a kind of negotiated truce with the modern field system around it. Associated with the rath is a souterrain, a type of underground stone-lined passage or chamber commonly found in early medieval Irish settlements, used variously for storage, refuge, or both. The souterrain at Kincullia is catalogued separately, which hints that it survives as a distinct feature even if the enclosure above ground does not.