Known locally as Lisculliheen, or Lios Coilichín in Irish, the site sits on the western side of a small valley running southeast from Coumaleague Hill, with an east-flowing stream running along its southern edge. What makes it worth pausing over is not just the earthwork itself but the subterranean structure it conceals, a souterrain, which is an underground passage or chamber of drystone construction typically used in early medieval Ireland for storage, refuge, or both.

The rath, a ringfort defined by a single enclosing earthen bank, measures roughly eighteen and a half metres across internally from north to south and just under twenty metres east to west. Its bank is most substantial at the northeast, rising to one and a half metres on the inner face and over two metres on the outer. The original entrance faces due east and is still nearly two metres wide. Some stone walling and revetment survives along the eastern sector, suggesting the bank was reinforced at least in part. Inside, in the western portion, the circular foundation of a small hut survives at just over six metres in diameter, its entrance oriented to the southeast. The souterrain in the northern part of the interior is T-shaped in plan, though one of its two passages is now blocked by collapse just 1.4 metres in. The accessible passage is modest, only 2.2 metres long, less than a metre wide, and a metre high at most, roofed by three stone slabs. The second passage retains its lintelled entrance, carefully constructed with upright slabs and a few courses of drystone masonry, even if what lies beyond is no longer reachable. The detail in the construction is disproportionate to the scale, which is part of what gives souterrains their quietly unsettling quality. The description of the site draws on the 1986 Corca Dhuibhne archaeological survey compiled by J. Cuppage, a thorough inventory of the Dingle Peninsula's considerable pre-Norman remains.

A laneway runs along the western edge of the site, which gives some sense of its position in the landscape, set into sloping ground with the stream below and the hill rising behind.