Image Cache: Crossrail, London's new subway system (and Europe's biggest infrastructure project) is nearing completion: the holes have been dug, and now there's just the little matter of kitting them out.
A new series of images have been released by Crossrail, showing the bit that comes after digging the tunnels. A custom fleet of machines are in the process of laying the five different kinds of track, while stations turn from empty voids into something passengers can actually queue in.
The first passenger trains should start running in 2017, while the full line is meant to be working by 2019. When it's all done, London will have a much-needed capacity boost for its very old and very overcrowded Tube.
Image credit: Crossrail