Siegfried, SEEG freed, was a legendary hero in medieval German literature. As a young man, Siegfried had acquired the fabulous treasure of the Nibelungs and a cloak that made him invisible. He also killed a dragon and bathed in its blood, which made his body invulnerable. But a linden leaf had fallen on the spot between his shoulders, leaving the spot unprotected. Years later, Hagen, a member of the Burgundian court, killed Siegfried by thrusting a spear into the unprotected spot. Hagen later took the treasure from Siegfried's wife.