The Iron Pillar That Will Not Rust | Mysteries for Sleep

The Iron Pillar of Delhi stands in the Qutb complex, a 1,600-year-old structure made from wrought iron that has resisted corrosion despite centuries of exposure to India's climate and monsoons, puzzling metallurgists and historians alike. Unwind with this examination of one of history's most perplexing metallurgical achievements as you fall asleep. A complete narration of the unknown — perfect for sleep, studying, or relaxing. New video every day. 📺 More mysteries for sleep:    • Secrets for Sleep   #SleepStories #UnexplainedMysteries #SleepAndSecrets