The site measures roughly 24 metres north to south and 17 metres east to west, an unassuming stain in the soil that most people passing the field would never notice.

A fulacht fia is a type of burnt mound found across Ireland and Britain, typically dating to the Bronze Age. The working theory, supported by experimental archaeology, is that they functioned as outdoor cooking or food-processing sites: stones would be heated in a fire and dropped into a water-filled trough until the water reached boiling point. Over repeated use, the shattered, heat-spoiled stones accumulated in a distinctive horseshoe-shaped or irregular mound around the trough. The Lissanisky example is unremarkable by itself, but it does not stand alone. A second fulacht fia lies approximately 180 metres to the north-east, suggesting that this particular stretch of north Cork was a place of repeated or sustained activity during prehistory. Whether the two sites were in use at the same time, or represent different episodes of occupation separated by generations, is not something the surface evidence can answer.