National Geographic ChannelNat Geo Wild

Mega Structures Panama Canal

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Lifting a mind-blowing 14,000 ships a year, the Panama Canal relies on the mightiest machines: gargantuan locks, a colossal cran

Most Intimidating Passage in the Panama Canal

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This 19th century marvel is struggling to keep up with 20th century demand.

duration: (02:56)Genre: Machines

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