The Newshound

Austrian gravel workers' 'rusty treasure' from the Danube is Europe's biggest ancient iron hoard, with enough to forge 500 swords

More than 500 double-pointed iron bars recovered from gravel beds along the Danube at Deinham, Austria — gravel workers who found them in 2019 reported the discovery to the Monuments Authority rather than selling the metal for scrap.
More than 500 double-pointed iron bars recovered from gravel beds along the Danube at Deinham, Austria — gravel workers who found them in 2019 reported the discovery to the Monuments Authority rather than selling the metal for scrap.

Gravel workers at Deinham in Upper Austria unearthed 540 double-pointed iron bars in 2019 during river sediment extraction. The bars have a combined weight exceeding one metric ton, making the find the largest Iron Age iron assemblage ever recorded in Europe. University of Innsbruck archaeologist Peter Trebsche and Marion Berranger of UTBM in France published their analysis in the journal Antiquity in September 2026, concluding the bars were almost certainly lost in a shipwreck while being transported down the Danube around 2,200 years ago.

Radiocarbon dating places the bars in the third to second century B.C., the La Tène period, when iron trade was rapidly expanding across Europe.

Trebsche called it 'nothing short of a minor miracle' the bars were reported to Austria's Federal Monuments Office rather than sold to scrap dealers, as corroded iron objects typically are.

Researchers believe the iron was forged in Bavaria before being shipped downriver — enough raw material to produce roughly 500 swords, each weighing between 3.3 and 4.4 pounds.

Moreaol.comDanube gravel workers stumbled upon 500 rusty Iron Age iron bars, probably a sunken boat’s cargonature.comHuge hoard of metal bars hints at vast Iron Age tradeNY PostEnough iron to forge 500 swords discovered in river as ancient ‘rusty treasure’ emergesdiscovermagazine.comRusty Treasure Hidden in the Danube River May Be Europe's Largest Hoard of Prehistoric Iron BarsYahoo News UK'Rusty treasure' found in Danube has 2,000-year-old iron that could equip a whole army with weaponsFox NewsAncient 'rusty treasure' emerges from river with enough iron to forge 500 swords
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