The oval rath at Clogherboy in County Galway is less forthcoming. Set on a west-facing grassland slope, it has been worn down to the point where only a partial arc of its original earthworks remains legible, and even that requires some patience to read.

A rath is the Irish term for a ringfort built from earth rather than stone, typically a circular or oval enclosure defined by one or more banks and ditches, used as a farmstead and place of protection during the early medieval period. At Clogherboy, the enclosure measures roughly 58 metres east to west and about 45 metres north to south, making it a reasonably substantial example. What survives is a degraded inner scarp, the sloped inner face of what was once a more pronounced bank, along with traces of an intervening fosse (a defensive ditch) and an outer bank running from the north-east, through the east, and around to the south-east. Beyond that arc, no surface trace of the original structure remains. Centuries of agriculture, weather, and gradual settling have reduced the rest to flat ground.