The moonbeams glided over the roof of the palace, and glanced suspiciously at the dark figure of the man who stood gazing anxiously up at the windows. When he saw that there was no movement, he went towards the tower built of huge blocks which guarded the entrance to the castle, took a bunch of rusty keys from under his mantle, and opened the locks and bolts of the ironbound door which led into the vaults. The last bolt was loosed, the heavy gate opened, and the moonlight streamed in freely over the treasures which were here displayed in splendid piles. Crowns of gold richly adorned with diamonds, bracelets and chains gleaming with jewels, lay there in rich profusion. Wrought by the skilful hands of the dwarfs, they had been kept hid by the little folk in secret mountain recesses until Siegfried came, and Alberich, the dwarf-king, had been obliged, notwithstanding his magic power and cunning, to yield to the might of the hero's arm, and give him the precious hoards of jewels. And beside these, heaped up to the very roof, were bars upon bars of uncoined gold, only waiting the impress of the mint to change them into an exhaustless hoard. This was the treasure of the Nibelungen, the widow Kriemhild's rightful possession, which the heroes had brought her a few weeks before from the land of the Nibelungen. With full hands she had scattered gold among these heroes, and had also given rich gifts to the vassals of her brother, the king of Burgundy, for she had now come to live in his land that she might be near the corpse of her beloved husband. And what Kriemhild's beauty and misfortune had failed to do, her bounteous gifts accomplished. The hearts of the Burgundians were turned towards her, so that Haco, the watchful hero, began to be anxious about his own influence and her probable revenge. So he determined to rob her of the Nibelungen treasure, that she might be deprived of the means of working his ruin. At a place not far from the royal city, where the Rhine flows in a still deeper channel, stood Haco a few hours later in a boat on the river, and watched the high-piled waggons, the first of which now passed over the shaking bridge, rolled on with threatening rumble, and stopped close to the low parapet. Haco stretched forth his stalwart arm and removed the back of the waggon, so that its precious burden slid into the depths below.