In the midst of all this he went to Caswallawn at Oxford, and tendered his homage; and honorable was his reception there, and highly was he praised for offering his homage. After his return Pryderi and Manawyddan began a feast at Narberth, for it was the chief palace. When they had ended the first meal, while those who served them ate, they arose and went to the Mound of Narberth, and their retinue with them. As they sat there, behold a peal of thunder, and, with the violence of the thunder-storm, lo! there came a fall of mist, so thick that not one of them could see the other. And after the mist it became light all around. When they looked towards the place where they were wont to see the cattle and herds and dwellings, they saw nothing now, neither house, nor beast, nor smoke, nor fire, nor man, nor dwelling, but the buildings of the court empty and uninhabited, without either man or beast within them. "In the name of Heaven," said Manawyddan, "where are they of the court, and all my host beside? Let us go and see." So they came to the castle, and saw no man, and into the hall, and to the sleeping-place, and there was none; and in the mead-cellar and in the kitchen there was naught but desolation. Then they began to go through the land, and all the possessions that they had; and they visited the houses and dwellings, and found nothing but wild beasts. And when they had consumed their feast and all their provisions, they fed upon the prey they killed in hunting. One morning Pryderi and Manawyddan ranged their dogs and went forth to hunt. Some of the dogs ran before them, and came to a bush which was near at hand; but as soon as they were come to the bush, they hastily drew back, and returned to the men, their hair bristling up greatly. "Let us go," said Pryderi, "and see what is in it." As they came near, behold, a wild boar of a pure white color rose up from the bush. Then the dogs, being set on by the men, rushed towards him; but he left the bush, and fell back a little way from the men, and made a stand against the dogs, until the men had come near. When the men came up he fell back a second time, and betook him to flight. Then they pursued the boar until they beheld a vast and lofty castle, all newly built, in a place where they had never before seen either stone or building. And the boar ran swiftly into the castle, the dogs after him. Then men began to wonder at finding a castle in a place where they had never before seen any building, and listened for the dogs. But they heard not one of the dogs, nor aught concerning them. "Lord," said Pryderi, "I will go into the castle to get tidings of the dogs." "Truly," he replied, "if thou wouldst follow my counsel, thou wouldst not enter therein. Whosoever has cast a spell over this land, has caused this castle to be here." "Of a truth," answered Pryderi, "I cannot thus give up my dogs," and to the castle he went.