MERIADOG (CEVN-MERIADOG), a township, with WIGVAIR, in that part of the parish of ST-ASAPH which is in the hundred of ISDULAS, county of DENBIGH, NORTH WALES, 1 mile (S.) from St. Asaph; containing 586 inhabitants, of whom 329 are in Meriadog. It is situated on the left bank of the Elwy, and the road from St. Asaph to Denbigh passes through it, close to the river: the rateable annual value is returned at £2295. There are some curious natural caverns, extending a considerable distance into the limestone hills, having the roofs, in some places, forty feet high, and containing various fossil remains. Among other objects of interest have been found the skull of a remarkably large animal, with the teeth perfectly sound and enamelled, and nearly as large as a cricket-ball; and the tongue of another, e3ual in size to that of a deer, with the form and grain remaining quite perfect, though completely petrified, and as hard as the limestone rock in which it was found. Nearer the river Elwy, and at the base of these hills, is an extensive limestone rock, naturally perforated into an immense arch, twenty-one yards in length, and thirty-six feet in height, through which a road proceeds, and is capable of admitting the passage of a large waggon loaded with hay.