Old Copper complex

The Old Copper complex or Old Copper culture is an archaeological culture from the Archaic period of North America's Great Lakes region. Artifacts from some of these sites have been dated from 6500 to 1580 BCE. It is characterized by widespread copper artifacts, including tools and weapons, as well as ornamental objects. The archeological evidence of smelting or alloying is subject to some dispute, and it is commonly believed that objects were cold-worked into shape. Furthermore, some archaeologists are convinced by the artifactual and structural evidence for metal casting by Hopewellian and Mississippian peoples.