In the meantime, Aurelius, the rightful king, was hailed with joy by the Britons, who flocked to his standard, and prayed to be led against the Saxons. But he, till he had first killed Vortigern, would begin no other war. He marched therefore to Cambria, and came before the tower which the usurper had built. Then, crying out to all his knights, "Avenge ye on him who hath ruined Britain and slain my father and your king!" he rushed with many thousands at the castle walls. But, being driven back again and yet again, at length he thought of fire, and ordered blazing brands to be cast into the building from all sides. These, finding soon a proper fuel, ceased not to rage till, spreading to a mighty conflagration, they burned down the tower, and Vortigern within it. Then did Aurelius turn his strength against Hengist and the Saxons, and, defeating them in many places, weakened their power for a long season, so that the land had peace. Anon the king, making journeys to and fro, restoring ruined churches and, creating order, came to the monastery near Salisbury, where all those British knights lay buried who had been slain there by the treachery of Hengist. For when in former times Hengist had made a solemn truce with Vortigern, to meet in peace and settle terms, whereby himself and all his Saxons should depart from Britain, the Saxon soldiers carried every one of them beneath his garment a long dagger, and, at a given signal, fell upon the Britons, and slew them, to the number of nearly five hundred. The sight of the place where the dead lay moved Aurelius to great sorrow, and he cast about in his mind how to make a worthy tomb over so many noble martyrs, who had died there for their country. When he had in vain consulted many craftsmen and builders, he sent, by the advice of the archbishop, for Merlin, and asked him what to do. "If you would honor the burying-place of these men," said Merlin, "with an everlasting monument, send for the Giants' Dance which is in Killaraus, a mountain; in Ireland; for there is a structure of stone there which none of this age could raise without a perfect knowledge of the arts. They are stones of a vast size and wondrous nature, and if they can be placed here as they are there, round this spot of ground, they will stand for ever." At these words of Merlin, Aurelius burst into laughter, and said, "How is it possible to remove such vast stones from so great a distance, as if Britain, also, had no stones fit for the work?"