The stones protrude only about thirty centimetres above the surface of a level pasture field near Lough Kay on the Iveragh Peninsula, and at first glance the whole structure could easily be dismissed as a scatter of low, unremarkable rocks. Only when you look more closely does the geometry become apparent: a narrow gallery, aligned northeast to southwest, its sides still more or less in place despite millennia of subsidence and loss.

This is a wedge tomb, a type of megalithic burial monument built predominantly in the late Neolithic and early Bronze Age, typically characterised by a gallery that narrows and lowers towards one end. The Ballycarbery example was originally at least 2.8 metres long, with each side of the gallery formed by two stones. One of those stones, on the north side at the western end, inclines noticeably inward, giving a sense of how the structure may once have been roofed or partially enclosed. At the western end, a transverse stone is thought to represent some form of entrance feature, which is consistent with how many wedge tombs were arranged, with access from the wider, higher end. The eastern end of the gallery is either missing entirely or buried below the current ground level, making the full original extent difficult to establish. There are faint traces of a low mound on the northern side, hinting at what the monument looked like when it was still an active place of burial or ritual, overlooking what is now Valencia Harbour to the southwest. The tomb was noted and described by the megalithic scholars Ruaidhrí de Valera and Seán Ó Nualláin in their 1982 survey of megalithic tombs across Counties Cork, Kerry, Limerick, and Tipperary, a volume that remains a foundational reference for this class of monument in the south of Ireland.