Construction work for the Bengaluru Metro is in full swing in the city.
In several stretches, tunnels are being dug deep under the earth with no signs of this overground.
How are these tunnels dug?
Here are 10 interesting facts about the construction of the underground metro.
In several stretches, tunnels are being dug deep under the earth with no signs of this overground.
How are these tunnels dug?
Here are 10 interesting facts about the construction of the underground metro.
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