History's Greatest Mysteries: Season 5, Episode 10

5 - 10: The Hindenburg Disaster

For decades, experts believed they knew what caused the Hindenburg disaster: that leaking hydrogen ignited--causing the airship to burst into flames. But there may be more to this story. Whatever triggered the explosion, it didn't just spell doom for the Hindenburg but for the entire rigid airship industry. What caused the Hindenburg Disaster?