The large flat slabs scattered across the northern interior, the linear hollows running through the earth, and the irregular mounds of stone all suggest the remains of a souterrain, an underground stone-lined passage or chamber typically built during the early medieval period, used for storage and sometimes as a place of refuge. Yet the site resists certainty. The features do not conform to any clear pattern, and what is present may be the remnant of something that has been slowly losing its shape for centuries.

The enclosure itself is a univallate rath, a ringfort defined by a single earthen bank or wall, and it contains traces of possible hut-sites alongside the suspected souterrain. Writing in 1931, O'Sullivan described what was then visible as a rectangular stone structure roughly four feet high, roofed with large flat stones, one of which had already fallen in. By the time Cuppage surveyed the site in 1986, that structure had deteriorated further, leaving behind the largest mound measuring just over five metres east to west and rising to about 1.2 metres. Whether O'Sullivan's roofed structure and the possible souterrain are the same feature, or two separate things, remains an open question. The rath abuts the western side of a local roadway, which has at least ensured its position is not entirely lost to the landscape.