H2O's EU5 Mod Workshop 中文

Copper Harbor

These waters of Lake Superior lie between Isle Royale and the Keweenaw Peninsula. Indigenous people mined native copper on Isle Royale long before European ships reached the lake, leaving pits near McCargoe Cove. In 1669–70 the Jesuit Claude Dablon recorded accounts of an island called Minong, renowned for its copper.

References

  1. pubs.usgs.gov/bul/1309/report.pdf
  2. www.nps.gov/isro/learn/management/upload/ISRO_Web_Accessible_Cultural_History_Context.pdf