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mirimir
on Dec 21, 2019
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The Afsluitdijk
There's lots of wood under Manhattan and Philadelphia, too.
dekhn
on Dec 22, 2019
[–]
Underground, by David Macauley, is a great book about what it's like underground in Manhattan.
https://www.amazon.com/Underground-David-Macaulay/dp/0395340...
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