BRITAIN-TRANSPORT-CROSSRAIL

Visitors walk past excavating machinery inside the Connaught tunnel, an old Victorian tunnel which is being brought back into use for the Crossrail project in London on March 24, 2014. Work is taking place to deepen, stengthen and widen the structure to ensure it is ready for the arrival of Crossrail trains, which will link central London with Maidehead in the west and Shenfiled in the east, upon its expected completion in 2018. The 550 metre-long Connaught Tunnel, which runs below the Royal Docks in East London and emerges close to the ExCel centre, was built in 1879 but has been derelict since 2006. AFP PHOTO / ADRIAN DENNIS (Photo credit should read ADRIAN DENNIS/AFP via Getty Images)