In Killoughane, on the Iveragh Peninsula in County Kerry, there is a ringfort, or rath, that no longer exists in any visible form. A rath is an early medieval circular earthwork enclosure, typically defined by one or more banks and ditches, and once among the most common settlement types in Ireland. This one, known variously as Lismohillee, Lios na mBuachaillí, or Lios Mothaille, the Irish names reflecting some uncertainty about the original form, has vanished entirely from the landscape.

The site was positioned on slightly elevated ground overlooking the Gaddagh river, a setting typical of ringfort placement, where a modest rise offered both practical drainage and a view of the surrounding terrain. It was recorded on the first edition of the Ordnance Survey map as a circular enclosure, the standard cartographic representation of a rath, but by the time the second edition was produced it had already been reduced to a note reading "site of". At what point the physical remains disappeared is unknown, though the monument does not appear to have been within living memory of those consulted during survey work compiled by A. O'Sullivan and J. Sheehan for their archaeological survey of the Iveragh Peninsula, published by Cork University Press in 1996. The Irish name Lios na mBuachaillí, if that is indeed the correct form, translates roughly as "the fort of the boys", a curiously evocative label for something that left so little behind.

There is nothing to see at this location today, and that absence is arguably what makes it worth knowing about. The ground near the Gaddagh river holds the coordinates of a settlement that shaped, in some small way, the early medieval landscape of South Kerry, without leaving any surface evidence that would catch the eye of a passing walker.