The bank itself does double duty: it curves around the northern and western sides of the site before extending outward in both directions to serve as an ordinary field boundary, so that what was once a defined settlement space has been folded into the working geometry of the land around it. It is the kind of continuity that Ireland's countryside manages without ceremony.

This is a rath, the term commonly used for an earthen ringfort, the most numerous monument type in the Irish countryside. Raths were typically enclosed farmsteads, in use from roughly the early medieval period, between the fifth and twelfth centuries, and they survive in their thousands across the island, though many have been ploughed flat or built over. The Craggs example is oval rather than circular, measuring approximately 29.5 metres north to south and 25 metres east to west. Its enclosing bank, composed of earth and stone, rises about 0.9 metres on the interior side and 0.8 metres externally along the northwestern to southern arc. Where the bank gives way to a scarped edge, that is, a cut or shaped slope in the ground rather than a built-up bank, the drop is shallower, around 0.3 metres, running from south back around to the northwest. The site sits in an area of outcropping limestone, which gives the interior its uneven surface and would have made any construction or cultivation there a more demanding enterprise than the modest earthworks might suggest. The record was compiled by Denis Power and uploaded in August 2011.

The site lies in rough pasture and is used for grazing, though the northeastern quadrant had become heavily overgrown at the time of survey, which may make it difficult to read the full shape of the interior from ground level. The limestone outcrops are the most legible feature underfoot, and the point where the rath bank transitions into the field boundary on either side is worth tracing on the western edge. Because the enclosure occupies a field corner, the boundary function of the surviving bank may have helped preserve it where a more centrally placed monument might not have fared as well.