The site is known by the Irish word caltragh, which refers specifically to these unconsecrated burial places used for unbaptised infants, a practice rooted in the theological anxieties of pre-modern Catholic Ireland. Denied burial in consecrated ground because they had died before baptism, these children were laid to rest in liminal spaces, often within or beside prehistoric earthworks, at boundaries, or near water.

The enclosure itself is subcircular in shape, measuring roughly 62 metres on its northeast to southwest axis and 56 metres northwest to southeast. What survives of the defining bank is modest, reaching only about half a metre in internal height and just over two metres externally, with a base width of nearly nine metres. For much of its circuit, the enclosure relies on a natural scarp rather than a constructed bank, suggesting either considerable deterioration over time or an original design that made use of the existing topography. A gap at the southern side appears to be of modern origin rather than a historic entrance. The children's burial ground occupies the eastern half of the interior, folded within the arms of this older, poorly understood earthwork.