It measures roughly 29 metres north to south and 32 metres east to west, dimensions modest enough that a walker might cross it in a dozen strides, yet substantial enough to suggest it once meant something to whoever shaped this hillside.

The enclosure was already old enough to record when the first edition Ordnance Survey six-inch map was drawn up in 1839, and it appears again on the 1900 revision, maintaining the same rectangular outline across six decades of cartographic attention. Rectangular enclosures of this kind are found throughout Ireland and can serve a range of functions, from settlement and farming to more ceremonial purposes, though without excavation it is rarely possible to say which applies. What complicates this particular example is a field boundary running north to south across the monument, just west of centre, a later division that cuts through whatever original unity the enclosure once had. The Monefelim River flows roughly 300 metres to the north-east, descending to the south-east, which would have made this a practical as well as commanding position on the hillside.