Tucked at the base of a steep north-facing hillslope to the west of Ballynakill Harbour, the remains of this court tomb are so ruined that they read less as a monument and more as a puzzle scattered across the ground, and yet the individual stones still carry a quiet authority. The chamber that can be traced measures roughly three metres in length and just over a metre in width, aligned on a northwest to southeast axis, with a notably tall backstone anchoring the northwest end and a transversely set jamb at the southeast.

Court tombs are among the oldest megalithic monuments in Ireland, built by Neolithic farming communities roughly five to six thousand years ago. They typically consist of a roofed gallery divided into burial chambers, fronted by an unroofed semicircular or oval forecourt, which is thought to have served some ceremonial function. What remains at Garraunbaun is specifically the rear chamber of such a structure, meaning the forecourt and any forward chambers have either collapsed beyond recognition or been carried off entirely. A stone sitting about two metres to the southeast of the chamber may be a displaced entrance jamb, hinting at where the tomb's interior once began. A large slab lying to the north adds to the sense of a structure that has slowly come apart over millennia. The landscape context is fitting in its bleakness: a cold, north-facing slope looking out toward the harbour, the kind of position that feels chosen rather than accidental, even if the reasoning behind that choice is now beyond recovery.