He was just driving past the palace, from which could still be heard a subdued roar, when he discovered a small gnome standing in the shadow of the building. The gnome was glaring at the green jeep and his hands were making strange passes in front of him. Kevan gazed at him curiously and then suddenly remembered what Brian Shanachie had said. He twisted the wheel and sent the jeep bouncing over a small hill. Glancing back, he was glad he had remembered, for he was just in time to see a tree turn into some sort of giant pink worm and go wriggling off at a mad pace. The tree was just beyond where the jeep would have been if he'd continued straight. Kevan had no doubt that if he'd failed to turn, he would have been riding just such a pink monstrosity. He soon got the jeep straightened out again in the direction of the compass needle and pressed the accelerator to the floor. The little car went bouncing over rocks and hills, undaunted by all that was in its path, and Kevan MacGreene grinned happily. This was the sort of magic which gave him a sense of reality. After what seemed like a couple hours of riding, Kevan found he was approaching the giant tree which he assumed must be Yggdrasil. He'd sighted it more than an hour back and for the past half hour had been driving in the shade of the tree. Now, just beyond it, he could see the huge flat rainbow arching up into the sky. He arrived near the trunk of the tree and stopped the jeep, while he looked around for the bridge. There was nothing that resembled one--except the rainbow. He noticed that its incline was gradual enough to be ascended and finally decided that it must be the bridge for which he was looking. He was about to put the jeep into gear, when a new voice spoke to him. "Really, old chap," it said, in the broadest of English accents, "I wouldn't, y'know. Bifrost is composed of fire, air and water. I should imagine the fire element might harm your tyres, to say nothing of exploding your petrol." Kevan looked around but saw only a huge serpent coiled around the tree, apparently gnawing on its roots, and a sneaky looking squirrel which was just then scurrying up the trunk of the tree. He had about concluded that he was again dealing with a gnome who was too thin to be seen when he noticed that the serpent's eyes were fixed on him and that there seemed to be a friendly gleam in them. "Were you addressing me?" he asked. "Yes," said the serpent. "I'm aware that it was forward of me, y'know--we haven't been introduced and all that--but, dash it all, one just can't let a chap rush into danger." Kevan found himself grinning at the accent. "Who are you?" he asked. "Nidhoggr, the serpent of Yggdrasil," the snake said. "I'm Kevan MacGreene. How do you do." "Charmed, I'm sure," said the serpent, with what was obviously meant for a friendly smile. The effect was modified unpleasantly by the appearance of his fangs.