The site is known as Lisnakilla, or Lios na Cille in Irish, a large subrectangular enclosure sitting roughly 200 metres west of the Owenascaul river. What makes it quietly remarkable is not any single dramatic feature but the sheer density of activity compressed into its interior: multiple rectangular house foundations, internal dividing walls, and the ghost of a souterrain, an underground stone-lined passage typically used in early medieval Ireland for storage or refuge, that was apparently discovered in the south-western sector some years ago but has since left no visible trace above ground.

At least four rectangular structures occupy the northern half of the enclosure, their walls now so worn that they read only as low earthen and stony banks. Two of these lean against the southern side of the northern dividing wall at its western end; a third abuts the northern side of a middle dividing wall; and a fourth sits in the north-east corner of the enclosure. The arrangement suggests a settlement that grew incrementally, each new structure finding its place against an existing boundary rather than being planned from scratch. The remainder of the interior is covered by east-to-west cultivation ridges, the corrugated traces of former lazy-bed farming, and it is entirely possible that some of the dividing walls and structures belong to this agricultural phase rather than to an earlier period of occupation. The date of the site remains genuinely indeterminate. This ambiguity, frustrating in one sense, is also part of what the site communicates: layers of use folded over one another until they become difficult to read apart. The survey description on which our knowledge of the site largely rests was published by J. Cuppage in the 1986 Dingle Peninsula archaeological survey, Corca Dhuibhne.