The 3,150 m long Lefortovo tunnel in Ru...
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The 3,150 m long Lefortovo tunnel in Russia, is the longest in-city tunnel in all the world. It is nicknamed 'The Tunnel of Death'. See for yourself why. There is a river running over the tunnel, and water leaks through in some areas. When the temperature reaches nearly 0°C (like it does duri...
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