New York -- before the City | Eric Sanderson

This story starts in 1609 and with a map made 150 years later from a British cartographer. It is remarkable - note the title of the project
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400 years after Hudson found New York harbor, Eric Sanderson shares how he made a 3D map of Mannahatta's fascinating pre-city ecology of hills, rivers, wildlife -- accurate down to the block -- when Times Square was a wetland and you couldn't get delivery