Gartnanoul

A Neolithic dual court tomb in Killykeen Forest Park, County Cavan, Ireland, dating to approximately 4000-3500 BC. Called a dual-tomb because it has two tombs aligned with each other, each with its own court. Originally estimated at 28m long and 8m wide. The north court is 3m deep and 4m wide. The tomb remains unexcavated and the roof stones are missing, though the structure is otherwise in good condition. It is a protected National Monument under Irish law, managed by Coillte within the forest park.