In the 1840s hundreds of people flocked to
the Keweenaw Peninsulaa slender, rugged protrusion jutting sixty miles
into Lake Superior. They came for copper. Eastern investors,
speculators, adventurers and miners journeyed to the isolated region of
the western Upper Peninsula in what became the nation's first mineral
rush. The copper rush led to the organization of Keweenaw County; Eagle
River was chosen the county seat.