Bronze tools found in Sweden dating from 3,600 years ago were made using copper from the Mediterranean, archaeologists have shown. They now also believe that rock carvings of ships found in Bohuslan, Sweden were visual documentation of trade between ancient Scandinavia and the Mediterranean. Most of the copper circulating in Bronze Age Europe apparently originated from Sicily, Sardinia, the Iberian peninsula - and Cyprus, going by isotope analysis... The precious copper was exchanged for Nordic amber, which was as cherished as gold in Mycenaean Greece and in the prehistoric Middle East... The ancient Cypriot copper industry produced relatively pure stuff,...