Archaeologists excavating the ancient urban meat of Munigua inward southern Kingdom of Spain bring constitute a vast Roman copper mining functioning built on an older mine dating dorsum thousands of years.
Exploitation of ore at Munigua acre began yesteryear the Turdetani, the master copy inhabitants of the region, over 4,000 years ago. Now the excavators bring discovered an elaborate organisation of ventilated subway galleries connected yesteryear tunnels dating to the Roman era.
They besides constitute shafts connecting at diverse heights forming floors that permit the miners extract metallic deeper than had been believed possible at the time. Happily for the miners, the ancient Romans were on to the hugger-mugger of ventilation.
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