The enclosure at Polehore sits on a south-facing slope in County Wexford, its outline now reduced to a rectangular planting of conifers roughly 31 metres east to west and 29 metres north to south, defined by a low bank on the northern side and a scarp on the remaining three. There is no surviving fosse, which is the external ditch typically cut around a rath, and no detectable entrance. That ambiguity is part of what makes it interesting: the site is probably a rath, the term used for a roughly circular earthen enclosure associated with early medieval settlement in Ireland, but the usual diagnostic features have either eroded away or were never there to begin with.

The earliest cartographic record comes from the 1839 edition of the Ordnance Survey six-inch map, where it appears as a circular embanked enclosure with an external diameter of approximately 35 metres east to west, its shape slightly pinched by field banks running east to west at the north and south. By the 1941 Ordnance Survey edition, the description had shifted to a subrectangular wooded enclosure, reflecting both genuine changes on the ground and the encroachment of tree cover that has continued since. Archaeological testing carried out in 2007, to the west and north of the enclosure, produced nothing earlier than post-medieval pottery, leaving the site's original function and date without firm material support. The Polehore Pill runs roughly 120 metres to the south, and the River Slaney lies approximately 500 metres to the east, a configuration that would have made the position practical for early settlement, with water close on two sides without the risk of flooding a low-lying site.