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The Four

Explore Michigan with Creator and Educator Alexis Dahl

Based in the Upper Peninsula, Alexis Dahl is a science communicator among other things, spending much of her time exploring Northern Michigan. She shares her adventures on her YouTube Channel, while also sharing information and historic details about the places she visits.

About a billion years ago, huge volumes of lava covered northern Michigan. About 200 years ago, those lava flows gave rise to the first major, mechanized copper mine in North America. This is the story of the Greenstone Flow and the Cliff Mine in Michigan’s Keweenaw Peninsula.

You can watch the full video below:

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