Kraków's dragon bones have been hanging on the cathedral for 600 years and they're... whale ribs?

everyone knows the Wawel dragon story (Smok Wawelski) — dragon in a cave under Wawel hill, ate the town's young women, hero feeds it a sheep stuffed with sulfur, it gets so thirsty it drinks the Vistula river until it bursts. classic. earliest written version is 13th century. the bit that's genuine……