The Æsir knew not what to do, for Thor and his hammer were not there to protect them, and Asgard seemed in danger with this enemy within its very walls. Hrungnir called for more and more mead, which Freia alone dared to bring and set before him. And the more he drank the fiercer he became. At last the Æsir could bear no longer his insults and his violence. Besides, they feared that there would be no more mead left for their banquets if this unwelcome visitor should keep Freia pouring out for him Thor's mighty goblets. They bade Heimdal blow his horn and summon Thor; and this Heimdal did in a trice. Now rumbling and thundering in his chariot of goats came Thor. He dashed into the hall, hammer in hand, and stared in amazement at the unwieldy guest whom he found there. "A giant feasting in Asgard hall!" he roared. "This is a sight which I never saw before. Who gave the insolent fellow leave to sit in my place? And why does fair Freia wait upon him as if he were some noble guest at a feast of the high gods? I will slay him at once!" and he raised the hammer to keep his word. Thor's coming had sobered the giant somewhat, for he knew that this was no enemy to be trifled with. He looked at Thor sulkily and said: "I am Odin's guest. He invited me to this banquet, and therefore I am under his protection." "You shall be sorry that you accepted the invitation," cried Thor, balancing his hammer and looking very fierce; for Sif had sobbed in his ear how the giant had threatened to carry her away. Hrungnir now rose to his feet and faced Thor boldly, for the sound of Thor's gruff voice had restored his scattered wits. "I am here alone and without weapons," he said. "You would do ill to slay me now. It would be little like the noble Thor, of whom we hear tales, to do such a thing. The world will count you braver if you let me go and meet me later in single combat, when we shall both be fairly armed." Thor dropped the hammer to his side. "Your words are true," he said, for he was a just and honorable fellow. "I was foolish to leave my shield and stone club at home," went on the giant. "If I had my arms with me, we would fight at this moment. But I name you a coward if you slay me now, an unarmed enemy." "Your words are just," quoth Thor again. "I have never before been challenged by any foe. I will meet you, Hrungnir, at your Stone City, midway between heaven and earth. And there we will fight a duel to see which of us is the better fellow." Hrungnir departed for Stone City in Jotunheim; and great was the excitement of the other giants when they heard of the duel which one of their number was to fight with Thor, the deadliest enemy of their race. "We must be sure that Hrungnir wins the victory!" they cried. "It will never do to have Asgard victorious in the first duel that we have fought with her champion. We will make a second hero to aid Hrungnir."