This is what remains of a rath, the Irish term for a roughly circular earthwork enclosure typically dating from the early medieval period, built by farming families as a defended homestead, its bank and ditch enclosing a space where people lived and kept livestock. Here, the bank has long since been levelled and the fosse, the surrounding ditch, has filled and softened, leaving a circular platform measuring roughly 34 metres north to south and 32 metres east to west.

The site appears on the Ordnance Survey six-inch map of 1842, marked with hachures indicating a circular raised area of around 35 metres in diameter. By the time the 1937 revision was made, the depicted diameter had reduced slightly to about 30 metres, suggesting gradual agricultural attrition across the intervening century. The true extent of the original earthwork only became clear through aerial photography: a cropmark of the bank was captured in a 1984 photograph, and a second image from 1989 revealed the fosse as a distinct cropmark beneath the grass, the buried soil and moisture differences betraying the old ditch to the camera in a way they no longer do to the eye at ground level. A note by Bowman in 1934 may refer to the same site, describing a levelled single-ramparted fort of approximately 32 yards in diameter on land then belonging to a Mrs Cott, which aligns closely enough with the measurements and location to be considered a likely match.