Originally Posted by
flarmip
Never realised there was a baggage tunnel between terminals - assumed it was all transferred using baggage carts the old-fashioned way. You learn something new every day!
There's quite a good article from just after the new tunnels were build in 2009
here.
BAA has recently completed a 2km-long tunnel that runs between London Heathrow’s Terminals 5, 3 and the new Terminal 2, which also connects to an existing baggage tunnel between Terminals 1 and 4, in order to create a new and vital link for the airport operator’s forthcoming integrated baggage system.