In this video, a mountain train in Kaprun, Austria, becomes a death trap when a faulty domestic fan heater ignites hydraulic oil, starting a fire that kills 155 people in just 9 minutes. The fire spreads rapidly through the tunnel due to poor safety design, trapping passengers in toxic smoke; only 12 survive—all led to safety by a volunteer firefighter who knew to go downhill, away from the smoke. Pros include strengthened Alpine railway safety standards and emergency systems introduced after the tragedy. Cons include catastrophic oversights: the absence of smoke detectors, sealed emergency exits, flammable hydraulic oil, and outdated safety regulations that failed to anticipate fire risks in a modernized train.