That absence is, in its own way, the most telling detail about this site: a prehistoric five-stone circle that survived for millennia only to be removed entirely sometime before 2008.

Five-stone circles are a distinctive Cork and Kerry monument type, compact arrangements of five stones set in a ring, typically with a pair of tall portal stones flanking an entrance and a low recumbent slab lying across the opposite side. The Leckaneen example sat near the head of a shallow valley opening to the south-east, a position common to many such circles, which are frequently oriented towards solar or lunar events on the horizon. When archaeologist Seán Ó Nualláin recorded the site in 1984, four of the five stones were already prostrate, lying flat rather than standing upright, with only the western sidestone still in a raised position. The four fallen slabs measured roughly 1.1 to 1.7 metres in length and between 0.2 and 0.3 metres thick, making them relatively modest examples of the type. The overall diameter of the circle was estimated at around 3.5 metres. A further prostrate slab lying some 7 metres to the east was noted as a possible fallen standing stone, hinting that the monument may once have been part of a slightly larger complex. By the time the site was revisited for later surveys, the remains had been removed altogether, leaving no trace on the ground.