History of The Spiral Tunnels

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The Amazing History of the Blue Ridge Tunnel | Mysteries of the Abandoned | Science Channel

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New York's Deep Tunnel - The Lincoln Tunnel's Forgotten Past - IT'S HISTORY

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Exploring Mysterious Underground Tunnels in Hong Kong (DEEP under The City)

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15 Biggest Tunnels Throughout Human History

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Into the Dark Tunnels of Arras with the New Zealand Tunnelers | History Traveler Episode 385

(33:33)

Into the Tunnels Beneath Hitler's Mountain | History Traveler Episode 321

(29:28)

Ancient civilization tunnels discovered in Nebraska The untold story

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The Secret Tunnel Under the Berlin Wall | The Great Escape That Shocked the World! 🌍🔓 | AI History

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Washington D.C.'s Secret Federal Tunnel System Explained

(13:59)

1000 Mile Long \

(3:58)

LA's Forgotten Tunnel Systems Explained | 11 Miles Under the City

(16:39)

Historical Tunnel Construction – Building tunnels in the 19th Century

(1:19:1econd)

Appalachia's Abandoned Tunnel Explained

(14:51)

The Thames Tunnel

(17:55)

1000-Mile-Long Ancient Tunnels Across Continent? ⛏️

(17:25)

Hoosac Tunnel construction

(7:37)

Grand, Historic, and Never Used: Nottingham's Park Tunnel

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How a Train Tunnel Became the Center of NYC’s Art Scene | I Was There

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The Mystery of Burro Schmidt Tunnel | Weird History of California

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