The ring is roughly thirty metres across, north to south, and just over thirty-three metres east to west, making it nearly but not quite symmetrical. What gives it away as something more than a chance grouping of trees is what lies beneath them: a low enclosing bank and a shallow ditch, the ditch surviving to a depth of only about thirty centimetres. Easy to miss, easy to dismiss, and yet the combination of earthwork and tree line has held this circular form in the land long enough to be noted and measured.

Enclosures of this kind appear throughout Ireland and can be difficult to date or assign a function without excavation. Some are the remains of ringforts, the enclosed farmsteads that were the dominant settlement form in early medieval Ireland, typically from around the fifth to the twelfth centuries. Others may be later features entirely. The arrangement here, with trees following the line of the bank, suggests the possibility of a tree ring, a deliberate or long-established planting along the perimeter that has helped preserve the earthwork's outline over time. Whether the trees were planted to mark the boundary, grew along it naturally over centuries, or were deliberately maintained in more recent times is not recorded. The site appears in a 1994 archaeological survey of the Ballinrobe district, including the areas around Lough Mask and Lough Carra, which catalogued a wide range of earthworks and monuments across that part of Mayo. Its inclusion there reflects how often such subtle features survive in agricultural land, quietly persisting in the corner of a field.