9 الموسم
158 حلقة
MegaStructures - Season 8 Episode 4 الحلقة 4
South Korea never constructed a submerged tunnel, but now tackles the challenge of building one of the deepest immersed highways on Earth. Designed for the fickle conditions of the Pacific, the giant tunnel must be both earthquake and typhoon proof.
- عام: 2012
- بلد: United States of America
- النوع: Documentary
- ستوديو: National Geographic
- الكلمة الرئيسية:
- مخرج:
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