That external height, 4.7 metres according to the site record, is considerably more dramatic than the inner face, which stands at 1.9 metres, giving anyone standing inside the enclosure little sense of just how substantial the whole structure is from without. The ditch itself, a waterlogged fosse running from south around to east, is 2.7 metres deep and equally wide, meaning it would have presented a genuinely formidable obstacle to anyone approaching without permission.

This is a rath, the most common type of early medieval settlement monument in Ireland. Raths were enclosed farmsteads, typically built and occupied between roughly the sixth and twelfth centuries, in which an earthen bank and ditch demarcated a household's living space and provided a degree of security for people and animals alike. The example at Graig is roughly 35 metres across on its north to south axis, which places it within the typical range for a single-family enclosure. The record, compiled by Denis Power and uploaded in August 2011, notes that part of the enclosing bank has been levelled along the east to south arc, so the circuit is no longer complete. What survives, though, is detailed enough to be genuinely informative. There are gaps in the bank at the northwest, north-northwest, southeast, and south-southeast. The northwest gap is particularly interesting: it features a curving ramp that drops down into the fosse, suggesting a deliberate, engineered entrance rather than simple erosion. At the south-southeast, two very low parallel earthen banks, each running about 15 metres in length and set roughly 10 metres apart, approach the gap from outside, possibly the remnants of a funnel or lane used to move livestock in and out of the enclosure.

The site sits in agricultural pasture, and the interior along with much of the surviving bank is covered in dense overgrowth, so a visit in late winter or early spring, before vegetation takes full hold, will give the clearest view of what remains. The waterlogged fosse means the ground around the southern and eastern arc is likely to be soft underfoot regardless of season, so sturdy footwear is sensible. The parallel banks at the south-southeast entrance are low enough that they are easily missed from a distance; they reward a slower, closer approach along the outside of the monument rather than a direct line to the interior.