The greatest of the heroic epics to emerge from medieval Germany, the Nibelungenlied is a revenge saga of sweeping dimensions. It tells of the dragon-slayer Sivrit, and the mysterious kingdom of the Nibelungs with its priceless treasure-hoard guarded by dwarves and giants, of Prunhilt the Amazonian queen, fortune-telling water-sprites and a cloak of invisibility. Driven by the conflict between Kriemhilt, the innocent maiden turned she-devil, and her antagonist, the stoic, indomitable Hagen, the story is one of human tragedy, of love, jealousy, murder, and revenge, ending in slaughter on a horrific scale. The work of an anonymous poet of c.1200, since its rediscovery in the eighteenth century the Nibelungenlied has come to be regarded as the national epic of the Germans. It has inspired countless reworkings and adaptations, including two masterpieces: Fritz Lang's two-part film, and Richard Wagner's Ring cycle.