Archaeologists in Austria have analyzed a collection of 500 iron bars that were likely lost in a Danube shipwreck 2,200 years ago.
Source: [Live Science](https://www.livescience.com/archaeology/nothing-short-of-a-minor-miracle-rusty-treasure-found-in-the-danube-is-full-of-2-000-year-old-iron-bars-that-could-equip-an-entire-army-with-weapons)