Ystum Cegid Burial Chamber, near Criccieth, North Wales, 18.8.17. This is only a short distance from the Rhoslan Burial Chamber but it couldn’t be more contrasting. The capstone is huge, resembling a grand piano lid and it is kept upright in the most precarious way by four upright stones with minimal contact. How it has managed to stay intact for so long is remarkable. It is a Neolithic passage grave and once possessed three chambers.