English: Information boards at the entrance gate to the Din Dryfol Burial Chamber Din Dryfol is a much damaged complex Neolithic chambered tomb. Excavations have indicated at least two, and perhaps three, phases in the development of the tomb. The first stage in construction was that of a rectangular chamber at the west end of the site. Later a middle chamber was added. This has largely disappeared with the exception of a fallen sidestone. The two chambers were originally covered by elongated cairns. Finally, the tomb was extended eastwards, but nothing remains of this stage except for the dramatic 3m high portal stones.