Michigan Isn't What You Think: Something HUGE Is Hiding Beneath

Michigan’s surface hides a geological world far bigger than most people realize.

In this DiscoverTube investigation, we explore the 2,200-kilometer Midcontinent Rift, volcanic rock extending miles beneath Lake Superior, buried Ice Age valleys, enormous copper deposits, ancient salt layers and groundwater moving invisibly toward Lake Huron.

USGS researchers are using seismic waves, gravity measurements, wells and water chemistry to build an increasingly detailed map of what lies beneath the Great Lakes.

Michigan isn’t just surrounded by water.

It sits above the remains of ancient oceans, volcanoes, glaciers and a continent that nearly split apart.

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