Ancient Mines in Spain Solve Mystery of Viking Metal

Archaeologists just found six hidden Bronze Age mines in Spain filled with copper, lead, and silver—and they think the metal from these mines traveled all the way to Scandinavia thousands of years ago to make Viking treasures! One mine even had 80 stone axes still sitting there, waiting to be discovered. Imagine if you could follow metal from an old mine straight to a Viking helmet in a museum—now we might actually be able to!