One night Gwyddno and his court were keeping high revel, and the dyke-master was very drunk. There was a concurrence of a spring-tide and a strong westerly wind, and the waves overwhelmed the banks. The king escaped with difficulty before the inrolling stormy sea. A poem by the king, who thus lost his kingdom, has been preserved. In Brittany about the same time there was a similar catastrophe. In Mount’s Bay, however, an extraordinary tide may have done damage, but certainly did not cause such a submergence as was supposed by William of Worcester. It has been supposed that the Mount is the Ictis of the ancients, which was the site of the great mart for tin, but this is more than unlikely. What would have been the advantage of making a market on this conical rock? It is much more likely that the great tin mart was in one of the low-lying islands of Kent. Castel-an-Dinas commands an extensive view; it stands 763 feet above the sea, and is within sight and signalling distance of the two other similar castles on Trencrom and Tregonning. It is more perfect than either, and is very interesting, as it has got its wall with the face showing through the greater portion of the circuit. There were at least two concentric rings of fortifications and numerous hut circles within the area, but these have been much pulled about when an absurd imitation ruinous tower was erected on the summit. Within the camp is a well, and outside it on the west side is one cut in the rock, to which a descent is made by about twenty steps. On the side of the hill is the very interesting and indeed wonderful group of clustered huts called Chysauster. Of these there remain four distinct groups, two of which have been dug out. They consist of an open space in the midst, with numerous beehive huts and galleries running out of it. The period to which they pertain is very uncertain. They ought to be investigated by such as are experienced and trained in excavation of such objects, and not be meddled with by amateurs. The tenant has begun (1899) to destroy one of the groups. In the centre of one of the huts may be seen neatly cut the socket-hole of the pole which sustained the roof, and in another the lower stone of the quern in which grain was pounded. There are other collections of a similar character, but none so perfect. In the neighbourhood of Penzance are some of the “Rounds,” formerly employed for the representation of sacred dramas. They are, in fact, open-air amphitheatres. The well-known Gwennap Pit, in which John Wesley preached, has been mistaken for one of these, but was actually a disused mine-hole.