28. Such peace as the mighty emperor Karl was able to secure, he was not content to spend in idleness, but devoted it to the service of God. Thus he undertook to build, in Germany, a church after his own plan, which should surpass the ancient buildings of the Romans.... The oversight he intrusted to a certain abbot, not knowing his cunning. But whenever the emperor was absent, the abbot would allow some of the laborers to purchase their release for money, but those who were unable to pay for this, or who were not permitted to leave by their masters, he oppressed with continual tasks, as the Egyptians once oppressed the people of God, so that they had scarcely any rest. By this means he gathered together an immense treasure of gold and silver and silken hangings.... Suddenly he was informed that his house was on fire. Hastening home he broke through the flames into the chamber where he kept the chests of gold. Seizing two of these, one on each shoulder (for he was not satisfied with saving just one), he tried to escape by the door. But a great beam, burned in two by the fire, fell upon him and killed him, his body being destroyed by terrestrial flames, but his soul despatched to that fire which was not kindled by mortal hands [the flames of hell]. Thus the judgment of God watched over the interests of Karl, whenever the cares of the empire prevented him from looking after them himself. II, 1. Adalbert told me about the defenses of the Huns [Avars]. "The land of the Huns," he said, "was surrounded with nine rings.... The distance from the first to the second ring was as far as from Zürich to Constance; the outer ring was composed of oak, beech, and pine trees, and was twenty feet across and twenty feet high, the space in between the trees being filled with stones and clay, and the outer surface covered with thick sod.... Within these [the first and second] rings the villages were so arranged that the voice of a man could be heard from one to another.... The distance from the second to the third ring was ten German miles, which equal forty Italian miles, and so on to the ninth, although, of course, each succeeding ring was narrower [contained less land] than the one preceding it. The fortifications and dwellings within each ring were so situated that a signal from a horn could be heard from any one of them. In this defense the riches of the west had been gathered together for more than two hundred years.... but the victorious Karl was able in eight years so completely to conquer the Huns, that not a trace of them is left."