15 astonishing facts about the great lakes


Lake Huron is on top of a big salt mine

Located about 1,750 ft. below ground, the Goderich Mine in Goderich, Ontario, is the world’s largest underground salt mine. It’s so deep that Lake Huron, the fifth-largest lake in the world, sits atop a segment of it. Unsurprisingly, it was found by people drilling for oil in 1866. They hit rock salt, and boom, a town had its thing.


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