[This has been updated from 2025 with a minor rewrite, updating source material, and adding a new video on the tragedy.]
During World War II one of the deadliest train disasters occurred in Italy when around 500-650 people suffocated to death.

3 March 1944, Unknown Author
Public Domain via Wikimedia Commons
Freight train 8017 began its journey on 2 March 1944 departing Naples for Portenza arriving at the Battipaglia station after 6 pm. Although a freight train both civilians and military personnel commonly hopped aboard. It then continued till it reached Balvano, the last train stop between the two long tunnels in the Apennines Mountains, it had 650 people aboard. It reached the stop near midnight and had to stop for maintenance
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At ten minutes to 1 am, the train began its ascent into the Galleria delle Amri. The tunnel was poorly ventilated with 1.3% grade. Not long after entering the tunnel the train came to complete stop for 30 minutes. The exact reasons are still unclear. Either the train could not pull the overloaded freight cars, or it was waiting for another train to exit from the opposite direction. Some argue that humidity had caused the train wheels to slip, and sandboxes were not helping.
Due to wartime restrictions, the train was using low grade coal resulting in excess amounts odorless carbon monoxide that filled the tunnel. The train driver tried reversing but fainted before this could be done. Complicating this was the two-locomotive setup and neither could communicate with the other due to differing locomotive models. The other driver was trying to push the train forward. A brakeman walked back to Balvano getting there around 5:10 am and a locomotive was quickly dispatched. By the time it arrived, it was too late. Passengers fleeing the rail cars for better air suffocated to death in the tunnel. Only 40 people in the last freight cars were found alive. The only train crew to survive were the brakeman and fireman from the second locomotive. The train was brought back to Balvano and the grim task of removing the bodies had begun.

5 March 1944, Author Unknown.
Public Domain via Wikimedia Commons
Both the US and Italians kept the disaster out of the news and a commission established to determine the cause blamed it on low quality coal and on railroad personnel allowing stowaways. The railroad company, Ferrovie dello Stato Italiane, declined all responsibility due to wartime restrictions and agreements between Italy and the U.S. Fifteen years later after considerable criticism, the Italian government would issue compensation to those identified as stowaways.
Changes were made to the running of trains: restrictions on freight tonnage and initially using both steam and diesel locomotives until steam locomotives were banned. The line was eventually electrified, and no such disaster has occurred again. Except for the train crew that were given proper graves, most of the stowaways were buried in four mass graves in the Balvano cemetery. The disaster showed how a combination of factors– poor ventilation, lack of communication between train drivers, overloaded freight trains, poor quality coal, and allowing stowaways–all contributed to one of the largest train disasters in history.
Sources
———. “More Than 500 Train Passengers Mysteriously Suffocate | March 2, 1944 | HISTORY.” HISTORY. Last modified May 27, 2025. Accessed March 16, 2026. https://www.history.com/this-day-in-history/March-2/train-passengers-suffocate.
Bruno, Antonio. “The Tragedy of the Balvano Train Disaster. – TerreDaMare.” TerreDaMare. Last modified June 12, 2022. Accessed March 16, 2026. https://terredamare.com/comuni/balvano.
Nag, Oishimaya Sen. “Deadliest Train &Amp; Railroad Accidents in History.” WorldAtlas. Last modified April 25, 2017. Accessed March 16, 2026. https://www.worldatlas.com/articles/deadliest-train-and-railroad-accidents-in-history.html.
“ITALY: Death Train.” TIME.Com. Last modified April 2, 1951. Accessed March 16, 2026. https://content.time.com/time/subscriber/article/0,33009,814495,00.html.
“Balvano Train Disaster.” Grokipedia. Last modified January 17, 2026. Accessed March 16, 2026. https://grokipedia.com/page/Balvano_train_disaster.