Detroit's Salt Mine: A City Beneath The City • Discoverology

Detroit’s Salt Mine: A City Beneath The City

Cities, Photos

This gigantic mine, 1,160 feet beneath the surface, spreads out under Detroit over more than 1,400 acres with 50 miles of roads. A huge sea covering the region evaporated more than 400 million years ago, forming salt deposits that were gradually buried by glacial activity.

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Photoprovocations By Russian Sergey Chilikov

Art, Photos, World

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Cities, Politics

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Photos, World

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The City Left Behind By China’s Nuclear Ambitions

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Cities, Photos, World

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Cities, Videos

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Photos, World

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Architecture, Photos, World

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Cities, Food, Health, Videos

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Founding father and first Prime Minister Lee Kuan Yew kicked off the Keep Singapore Clean campaign 50 years ago. The aim wasn’t just to make the city more pleasant. A cleaner city, Lee Kuan Yew reasoned, would create a stronger economy.

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Photos, Tech

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Cities, Innovation, Tech, Videos

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