What survives is a subcircular rath, measuring roughly 24.5 metres north to south and 22 metres east to west, its form still legible but only just. A rath is an early medieval enclosed settlement, typically defined by one or more earthen banks and ditches, and this one at Corraneena retains traces of an inner scarp along with a fosse (a defensive ditch) and outer bank running from the west-southwest around to the north. To the south, the picture is less clear.

The damage has come from two directions. Quarrying has eaten into the enclosing elements on the southern side, removing the very earthworks that would have given the site its original shape and sense of enclosure. Meanwhile, rubble from field clearance has been piled against the outer bank, burying it further. These are common fates for ringforts across Ireland. Thousands were built during the early medieval period, and many have been reduced over the centuries by agriculture, stone robbing, and gradual neglect, leaving behind only a scarp or a faint rise in a field to suggest that people once lived and worked within a defined, protected space.