Interesting video footage of a drone flying above, down and through the new Crossrail station and tunnels in London.
The BBC were given special permission to fly a camera drone under the streets of London to reveal the true extent of the massive tunels.
The BBC was given special permission to fly a camera-laden craft below the streets of London and have released a 90 second excerpt online.
The drone descends into a cavernous hole and then makes its way around a labyrinth
The footage finds people – dwarfed by the concrete structure – busy at work in their hi-vis jackets in an eerie, half-lit subterranean world.