This rectangular earthwork measures approximately 31 metres from north to south and 28 metres from east to west, enclosed by a substantial earth and stone bank that still stands up to 1.5 metres high in places. The bank itself is about 2.2 metres wide, though its northern section has weathered down to little more than a scarp over the centuries.

What makes this site particularly interesting is its wide, flat-bottomed fosse, or defensive ditch, that runs around the perimeter. This ditch varies between 2.6 and 3.5 metres in width and would have served as the primary defence mechanism, likely filled with water in its heyday. The northeast corner shows evidence of deliberate widening, possibly to strengthen this vulnerable angle of the fortification. Archaeological surveys suggest there may have been a causewayed entrance at the centre of the northern bank, though centuries of erosion have made this feature difficult to confirm with certainty.

These moated sites were typically constructed during the Anglo-Norman period in Ireland, serving as fortified farmsteads for wealthy landowners or as administrative centres for managing agricultural estates. The Lisduff example, documented in the Archaeological Inventory of County Tipperary, represents one of hundreds of such sites scattered across the Irish landscape; silent reminders of a time when even rural dwellings required serious defensive considerations.