Crossrail: Tunneling Beneath London
- 28 photos - http://theatln.tc/1heJKT3
- When one digs beneath London, England, one digs through history. Crossrail, the largest construction project in Europe, is tunneling beneath the city to provide a new underground rail link across London, and has encountered not only a maze of existing modern infrastructure, but historic finds ranging from mammoth bone fragments, Roman roads (with ancient horseshoes embedded in the ruts), Black Plague burial grounds, and 16th century jewelry. The $25 billion (15 billion pound) project is due to open in 2018, connecting London's Heathrow airport to the county of Essex -- five tunnel boring machines are creating a kilometer of new tunnel under London every two weeks.