This square enclosure, measuring 23 metres on each side, represents a type of defensive homestead that once dotted the Irish landscape during the Anglo-Norman period. The site consists of two concentric earthen and stone banks with a broad, flat-bottomed ditch running between them, a classic example of medieval defensive architecture designed to protect wealthy farmsteads or minor manor houses.

The fortifications remain remarkably intact despite centuries of weathering. The inner bank stands about 1.3 metres high and spans roughly 1.5 metres wide, though its western section along the north side shows considerable damage. The outer bank, better preserved particularly on the northern side, rises to 1.7 metres on the interior and measures 2 metres across. Between these earthworks runs the fosse, or defensive ditch, averaging 3 metres wide and 2 metres deep. Natural groundwater seepage keeps this ancient moat partially flooded, offering visitors a glimpse of how it might have appeared when actively defending its inhabitants.

A causewayed entrance, 2 metres wide, breaks through the defences at the southeast corner, marking the original access point to the enclosed area. While a modern road has cut through the eastern section of the outer bank, diminishing its preservation there, the overall layout remains clearly visible. Archaeological surveys conducted for the 1997 Archaeological Inventory of County Offaly documented these features, though more recent research has refined our understanding of such sites and their role in medieval Irish society.