History was made beneath the streets of London today when Europe's largest construction project reached a crucial milestone.
Three years of tunnelling work to create the new Crossail underground railway came to an end at Farringdon.
The final breakthrough in the tunnel boring was witnessed by Transport Secretary Patrick McLoughlin and London mayor Boris Johnson.
Crossrail, which opens in 2018, will link Reading in Berkshire with Shenfield in Essex and Abbey Wood in Kent.
The high speed commuter line will allow direct trains between Heathrow Airport, Canary Wharf and the City, travelling along 26 miles of tunnels.
Boring work began at Royal Oak near Paddington in May 2012.
Millions of tonnes of excavated London clay has been shipped to Wallasea Island in Essex to create a nature reserve for birds.