Underneath the streets of London, a team of more than tenthousand construction workers race to build a brand new metroline—Crossrail. Costing almost billion, it's the biggestengineering project in Europe and must link into the existingmetro system. As they burrow the 26 miles of tunnels,engineers battle to make sure historic buildings don't crack,London Underground trains keep running, and an ambitiousstation roof made up of 2500 pieces comes together on time.Crucially, they must drive one of their gigantic 1000-tontunnel boring machines through the earth, passing withininches of escalators and an active subway tunnel, without thepassengers on the tube platforms below ever knowing they arethere. Join NOVA to plunge into the tunnels of the LondonUnderground and follow this high stakes, action packedengineering endeavor, and discover just how engineers areperforming this delicate surgery through the heart of thehistoric city.
