an enormously speculative and ruinously expensive 'M25 tunnel' (what a terrorist target that would be )
We are talking about a runway over road cut and cover type tunnel not a bored Dartford tunnel type one.
You would think that there should be no need for further discussions and debates about LHR expansion yet some of the comments on this, a pilots forum, show that people really do not have a clue about what should be an easy decision.
Add to that the smoke and mirrors from those with ulterior motives and it is no wonder this has dragged on so long.
Hopefully we can now move forward in what is and has always been, the only sensible option.