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人工奇迹:大峡谷天空步道

Man-Made: Grand Canyon Skywalk
2009-04-02美国上映 / 47分钟
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简介

The episode documents the inspiration and engineering behind the construction of the Skywalk attraction at the Hualaipai Nation's "Grand Canyon West" village. Skywalk allows visitors to stroll out on a cantilevered bridge above a cliff, and peer directly through the glass floor to see the Grand Canyon floor 4,000 feet below their feet.

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