At Dromgower in County Kerry, a small ringfort known as Lisbeg, or Lios Beag, meaning simply "small fort" in Irish, once stood in a field alongside a souterrain, an underground stone-lined passage typically used in early medieval Ireland for storage or refuge. Today, nothing remains. The site has been completely levelled, and the ground offers no visible clue that anything was ever there at all.

What we know comes largely from the Ordnance Survey maps of the nineteenth and early twentieth centuries. On the 1842 edition, a "cave" is marked within the circular enclosure, the cartographers' usual shorthand for a souterrain, suggesting it was still recognisable, or at least remembered locally, at the time of surveying. By the 1916 edition, that annotation had disappeared from the map entirely, hinting that even the memory of it had begun to fade. The ringfort itself, a circular earthwork enclosure of the kind once common across rural Ireland, was recorded as a small example of its type, situated two fields south-west of a second, larger rath. C. Toal's North Kerry Archaeological Survey, published in 1995, documented the site before confirming that no trace of it survives.

There is nothing to see at Dromgower now, which is part of what makes it worth knowing about. The ordinary Irish countryside is layered with sites like this one, early medieval enclosures that have been quietly absorbed back into farmland over generations, their outlines erased by ploughing, drainage, and the gradual forgetting that comes with centuries of use. Lisbeg is, in that sense, representative of a much wider loss across the Kerry landscape.