CBSE BOARD XII, asked by devip649110, 6 months ago

Which is the biggest Tunnel In the world

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Answered by meenakumari74988

2

Answer:

The world's longest and deepest rail tunnel has officially opened in Switzerland, after almost two decades of construction work. The 57km (35-mile) twin-bore Gotthard base tunnel will provide a high-speed rail link under the Swiss Alps between northern and southern Europe.

Explanation:

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Answered by aryanphalke20006

3

Answer:

Gotthard base tunnel

Gotthard base tunnelThe world's longest and deepest rail tunnel has officially opened in Switzerland, after almost two decades of construction work. The 57km (35-mile) twin-bore Gotthard base tunnel will provide a high-speed rail link under the Swiss Alps between northern and southern Europe.

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