King Arthur’s cave,[189] on the side of a beautifully wooded knoll, overlooking the valley of the Wye, near Whitchurch, in Monmouthshire, explored by the Rev. W. S. Symonds in 1871, is a hyæna den, like that of Kirkdale, containing the gnawed remains of the lion, Irish elk, mammoth, woolly rhinoceros, and reindeer. Flint flakes, however, occurred in the undisturbed strata, which prove that it was also the resort of man. Mr. Symonds believes that the sand and gravel inside were deposited by the Wye, at a time when it flowed 300 feet above its present course, or before the valley was cut down to that depth. If this conclusion be true, the date of the occupation must be separated from the present day by a vast interval, which is only to be measured by the subsequent erosion of the valley by the slow operation of the subaerial agents, running water, ice, snow, and carbonic acid. The only remains of the mammoth which I have examined belong to young individuals, and consist of the second and third milk-molars, a fact which I have very generally observed in hyænas’ dens. The older mammoths would not fall an easy prey to so cowardly an animal. The cave had also been inhabited by man after the pleistocene age, for coarse pottery of the neolithic kind, and flint flakes, were dug out of an upper stratum, while I was watching the excavation, in company with the Rev. W. S. Symonds, and the “Wanderers” field club. _Caves of Gloucestershire and Somersetshire._ The outliers of mountain limestone, on the southern side of the Bristol Channel, have long been known for their ossiferous caverns and fissures. From a fissure in Durdham Down,[190] near Bristol, Mr. J. S. Miller obtained fragments of bones, about the year 1820, and among them Dr. Buckland notices the fossil joint of the hind-leg of a horse, the astragalus being held in natural position, between the tibia and the calcaneum, by stalagmite. Subsequently a large series of animals of the same species as those of Gower were discovered in it by Mr. Stutchbury, and are preserved in the Bristol Museum. _Caves of the Mendip Hills._ The caves of the Mendip Hills were known to contain bones as early as the middle of the eighteenth century, when that of Hutton,[191] near Weston-super-Mare, was discovered in working the ochre and calamine which fills some of the fissures. The miners having opened an ochre pit, south of the little village of Hutton, discovered a fissure in the limestone full of good ochre, which they followed to a depth of eight yards, until it led into a cavern, the floor of which was formed of ochre, with large quantities of white bones on the surface, and scattered through its mass. Dr. Calcott describes the bones as projecting from the sides, roof, and floor of the excavation in such quantities as to resemble the contents of a charnel-house. Subsequently it was fully explored by the Rev. D. Williams, and Mr. Beard, of Banwell.