Almost No One Has Been Here in a Century (The Adventure Copper Mine)
Key Topics:
Adventure Mine, Ontonagon, Michigan
History of the Adventure Mine: how it began, what happened here, and why it closed down
Geology of Keweenaw copper mines (where the copper came from)
Tour of the 1st and 2nd levels of the Adventure Mine
Tour of the 3rd level of the Adventure Mine, which hasn’t been visited in more than 100 years
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