The Scarborough attack is described in the Heimskringla as follows: -Then he brought up at Skardaburg, and fought with the people of the place. He went up a hill which is there, and made a great pile upon it, which he set on fire; and when the pile was in clear flame, his men took large forks and pitched the burning wood down into the town, so that one house caught fire after the other, and the town surrendered. The Northmen killed many people there and took all the booty they could. In the top border appears the mythical ant-eating Amphisbaena. Slaying one during the full moon is said to give power. In Greek mythology, the amphisbaena was spawned from the blood from the Medusa's head. A man atop the cliffs sets fire to the houses below. Scearburg, the ancient name of Scarborough, is of Saxon origin. 'Scear,' a rock, and ' burg,' a fortified place; and so it appears to be a Saxon town on a Roman foundation. The rune Kaunan appears in the top border. Kaunan is the rune of fire. It is also known as Kenaz ("torch"), based on its Anglo-Saxon name. Also in the top border appears the symbol for air and the symbol for water. In astrology each of the four elements is associated with three signs of the Zodiac. Air is associated with the astrological signs of Gemini, Libra and Aquarius and water is associated with Cancer, Scorpio and Pisces.