Bronze buckle and whistle from AD 600 found in Cape Espenberg . But bronze-working had not been developed at this time in Alaska . Scientists believe artefacts were created in China , Korea or Yakutia . Site may have been home to 'Birnirk ' culture , whose people travelled on both sides of the Chukchi Sea .
Bronze buckle and whistle from AD 600 found in Cape Espenberg . But bronze-working had not been developed at this time in Alaska . Scientists believe artefacts were created in China , Korea or Yakutia . Site may have been home to 'Birnirk ' culture , whose people travelled on both sides of the Bering Strait .