At 7:00 a.m. on September 14, 2024, dozens of people in colorful skirts and dress pants begin gathering around a small brick duplex at the Michigan/Wisconsin state line in the westernmost Upper Peninsula, just down the road from a series of budget strip clubs and adult video stores. This may seem like a strange place for a Native American ceremony, but not so: just beneath the bridge flows the Montreal River, and anywhere with Nibi is sacred.

Lake Superior — or Gichigami, as the Anishinaabe call her — is a mighty spirit. She has cast a forcefield around the Upper Midwest, protecting it from development by bestowing us with atrocious farming soil, and indeed I have dented my shovel trying to dig a four-inch hole. But this is where the plot thickens. Because Lake Superior’s protection is not absolute, and rich geology doesn’t just attract agate hunters…

It also brings mines.