Drumanone

Portal tombs in the British Isles are megalithic structures in which two upright stones of equal height, with a door stone between them, form the front of a chamber covered by a capstone that is sometimes enormous.

At Drumanone the supporting stones of the chamber are almost completely preserved. The capstone, measuring about 4.5 m × 3.8 m, has slipped backwards because the stone mound has largely been removed. The portal stones are more than two metres high. The gap of 1.2 m between them is closed by the door stone, which is as high as the portal stones. There are two further stones on each side. The western one was displaced by the slipped capstone. A small stone at the low end of the structure may be the broken remnant of the original end stone. The original dimensions of the polygonal chamber must have been about two metres.

The chamber was excavated in 1954. It contained considerable quantities of burnt bones and a small axe that originates from the flint mine at Tievebulliagh in County Antrim.