Páirc an Leasa, Fort Field in English, remembers a ringfort that no longer exists above ground, and has not done so since the 1950s. A rath, as these earthwork enclosures are generally known, was typically a circular bank and ditch construction used as a farmstead or defended homestead during the early medieval period in Ireland. Thousands survive across the country in varying states of preservation. This one does not.

The site appeared clearly on the first edition of the Ordnance Survey map as a circular enclosure, a reliable record of its form at that point in the nineteenth century. By the time the second edition was produced, two field boundaries had already been drawn across its northern half, suggesting that agricultural reorganisation was already encroaching on the monument. Whatever remained was removed entirely during the 1950s, a decade when land improvement schemes and changing farming practices led to the destruction of a great many such sites across Ireland. No visible trace survives today.