What makes it worth a second look is not its scale but its internal logic: three separate causeways, positioned at the north-west, east, and south-east, extend across a shallow ditch to connect an enclosing bank to the central mound. That arrangement implies deliberate, repeated access, and raises the question of what kind of ritual or practical use the space was designed to accommodate.

This is a ring barrow, a burial or ceremonial monument of a type common in Bronze Age Ireland, typically consisting of a central mound ringed by a bank and an intervening ditch, known as a fosse. The example at Lissaghanedan is modest in its dimensions: the mound measures roughly six metres across and stands less than a metre high, while the surrounding bank is about five metres wide and half a metre tall. The fosse between them is shallow, around forty centimetres deep. At the very centre of the mound, a large boulder lies on its side. Whether this stone was once upright and served as a marker, or whether it was always recumbent and part of the original structure, is not recorded. Its presence at the precise centre of the monument does, however, suggest it was placed with intention rather than arriving there by accident.