The one at Mweevuck in north Kerry carries a name that gives it away: Lisnadarree, from the Irish Lios na Daraí, meaning the ringfort of the oak. Whatever oak or oaks once marked this place, probably as a boundary feature or a point of local significance, the name has outlasted them by centuries.

The fort itself is a univallate rath, meaning it has a single enclosing bank rather than the concentric rings that sometimes indicate higher-status settlements. It is roughly circular, measuring thirty metres across from north to south and thirty-one from east to west, which is a fairly typical size for a farmstead enclosure of its kind. The earthen bank survives to an average height of 1.6 metres above the fosse and about 1.1 metres above the interior ground level. The fosse, which is the external ditch dug to provide material for the bank and to reinforce the sense of enclosure, runs in a U-shape around the outside and measures between two and three metres wide and one metre deep. These proportions are consistent with a working agricultural enclosure, the kind that would have protected livestock and defined a household's territory during the early medieval period, roughly the fifth to twelfth centuries, when ringforts were most commonly in use across Ireland. C. Toal documented the site in the North Kerry Archaeological Survey, published in 1995, which remains a key source for understanding the concentration of such monuments across this part of the county.