This nearly circular enclosure in Rahogarty, County Galway, sits on a rise in rolling grassland, its form still legible after more than a thousand years. It measures roughly 43 metres east to west and 42 metres north to south, which puts it comfortably within the range of a typical ringfort, a class of monument built in early medieval Ireland, broadly between the fifth and twelfth centuries, as a farmstead enclosure for a single family or small community.

A rath, as this type is technically called when its boundary is formed from earth rather than stone, usually survives as a low circular bank and internal ditch, though the Rahogarty example shows some variation in how its perimeter is constructed. The northern and south-western sections are defined by a bank of earth and stone, while the rest of the enclosure relies on a natural or cut scarp, a steep slope in the ground, to do the same work. There is an entrance gap on the south-south-east side, which is fairly typical; ringfort entrances tend to face away from prevailing weather, and a south or south-east orientation is common across the country. The fact that the form remains well-preserved suggests the land here has not been heavily ploughed or substantially altered since the enclosure fell out of use.