Archaeologists have analyzed 2,900-year-old stone carvings and a long-ignored chisel from the Iberian Peninsula, revealing that local craftspeople produced steel long before previously thought.
Intricate 2,900-year-old engravings on stone monuments from what is now Portugal in the Iberian Peninsula could only have been made using steel instruments, archaeologists have found. The discovery hints at small-scale steel production during the Final Bronze Age, a century before the practice became widespread in ancient Rome.
"This is an extremely hard rock that cannot be worked with bronze or stone tools," Ralph Araque Gonzalez , an archaeologist at the University of Freiburg in Germany and lead author of a new study describing the findings, said in a statement ."The people of the Final Bronze Age in Iberia were capable of tempering steel. Otherwise they would not have been able to work the pillars.
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