The ringfort at Gortnaskeha in north Kerry survives only in its name, Lisnagowerduff, an anglicisation of the Irish Lios na nGabar nDubh, meaning the ringfort of the black goats. A lios or rath is a roughly circular earthen enclosure, typically dating from the early medieval period, built as a farmstead and surrounded by one or more banks and ditches. This one left enough of an impression on the landscape to be recorded on the Ordnance Survey maps of 1841 to 1842 and again on the revised maps of 1914 to 1915, positioned directly behind a property known as Scallon's house. At some point after that second mapping, it was levelled, and according to the landowner, no surface trace remains.

What persists is the name itself, which is the kind of casual, local detail that tends to outlast the physical thing it describes. Black goats grazing on or around an ancient enclosure, specific enough to stick in local memory and eventually find their way onto a map and into the placename record. C. Toal's North Kerry Archaeological Survey, published in 1995, documented the site as part of a systematic effort to catalogue what remained of the region's archaeological landscape, a landscape that has lost a considerable number of its earthworks to agricultural improvement over the centuries. That this particular rath was gone by the time of the survey reflects a pattern common across Ireland, where the visible traces of early medieval settlement were quietly removed as land was brought into more intensive use.