Drone flight Crossrail tunnels London| BBC News
From the BBC. A drone equipped with a camera was used by the BBC to film the tunnels of Crossrail. Great job showing the massive scale of this construction project underway in London, U.K. And well done by the person who navigated the drone through these underground tunnels capturing great video footage along the way.
Crossrail is a 118-kilometre (73-mile) railway line under construction in London and its environs. It should begin full operation in 2018 with a new east-west route across Greater London. Work began in 2009 on the central part of the line—a tunnel through central London —and connections to existing lines that will become part of Crossrail after several decades of proposals. It is one of Europe’s largest railway and infrastructure construction projects. (source Wikipedia)
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