Video from the summit of Graig Fawr (National Trust Site). Graig Fawr is a large rock in Meliden, Denbighshire, North Wales which is part of the Clwydian range of mountains and hills. The romans mined this rock and there is a network of tunnels and shafts and open seams where lead ore was excavated. Also below the rock was the site of the Talargoch Lead Mine.