This one, tucked into Grove Wood in County Tipperary, takes a different approach on its eastern side: where a bank and fosse would ordinarily stand, there is simply a sheer drop. The land falls away so steeply that no ditch was needed, and the builders appear to have known it. On the remaining three sides, the engineering is meticulous and still largely intact, a double system of banks and flat-bottomed fosses, those broad ditches cut to slow or discourage approach, arranged in concentric rings around a sub-rectangular enclosure roughly 37 metres north to south and 42 metres east to west.

The inner bank on the southern and western sides stands between 1.65 and two metres above the interior and slightly more on the exterior face, with a width of up to six and three-quarter metres. Beyond it, a well-cut fosse nearly two metres deep separates it from an outer bank that is, in places, even more imposing, reaching 2.4 metres on its inner face. A narrow level terrace runs along the eastern scarp where the cliff-edge takes over from human construction, and a short earthen bank defines the northern half of this terrace before the ground simply gives way. The entrance, a causewayed gap three metres wide, passes through all the enclosing elements at the north-west. A causewayed entrance is one where the ditch is left uncut at a specific point, leaving solid ground underfoot rather than a bridge. Two further enclosures lie immediately adjacent, one sharing the western boundary and another about 35 metres to the north-east, suggesting this corner of Grove Wood was a focus of deliberate, organised activity over some period.

The interior today is covered in tall, thin beech trees and briars, the canopy filtering light across a slope that tilts down towards the eastern edge. The mature deciduous woodland of Grove Wood encloses the whole site, which means the earthworks read differently from season to season; in winter, when the leaf cover is gone, the full profile of the banks and their relationship to the escarpment becomes considerably easier to read.