Draining New York: What Lies Beneath?
Secrets of New York City
Season 2 Episode 2 of 15
The discovery of secrets beneath the ocean around New York, including an earth-shattering feat of engineering and a casualty of First World War stealth warfare
Draining New York: What Lies Beneath? airs on National Geographic Channel +1 at 5:00 PM, Wednesday 17 December. (Subtitles, audio description.)
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Documentary