The wedge tomb at Ballydivlin, roughly 700 metres from the sea, now forms part of a working fence line, its ancient stones serving the same boundary-marking purpose they may always have suggested, though not quite in the way their builders intended. It is the kind of survival that is easy to walk past without registering what you are looking at.

Wedge tombs are the most numerous megalithic tomb type in Ireland, characterised by a roofed gallery that typically narrows and lowers from one end to the other, and they are found in greatest concentration in the west and south-west of the country. This example at Ballydivlin was recorded and measured by Ruaidhrí de Valera and Seán Ó Nualláin in their systematic survey of megalithic tombs, published in 1982. The gallery runs roughly northeast to southwest, measuring four metres in length and approximately 1.3 metres wide. Three sidestones remain upright on the northern side; the southern side retains one upright and one fallen stone. A backstone is visible at the eastern end, and a further stone closes the western end of the gallery. One stone partially covering that western end may be a displaced roofstone, shifted from its original position at some point in the intervening millennia. There is no visible trace of the surrounding earthen or stone mound that would originally have enclosed the structure, though this is not unusual; such mounds were vulnerable to agricultural clearance over centuries. The flat coastal terrain here is itself worth noting, since wedge tombs more commonly occupy elevated or sloping ground elsewhere in Ireland, making the Ballydivlin setting quietly anomalous.