समुद्र में ये सुरंग कैसे बनाई गई How was this tunnel made in the sea #facts #hindifacts #ByteDesk

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Vlogs channeltunnel undersea tunnel underwater france england megastructure megastructures wonderful megaconstruction

In this video, we tell you how the 50-kilometer-long undersea CHANNEL TUNNEL was made between France & England.

समुद्र में ये सुरंग कैसे बनाई गई How was this tunnel made in the sea #facts #hindifacts #ByteDesk

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