On plane finder this morning Amsterdam is very busy with aircraft. So is northern France and traffic is transiting the French side of the channel at altitudes down to 20,000ft.
These areas are right in the red zone according to the latest Vaac maps, ash down to surface level. So why are these aircraft not falling out of the sky? Could it be that someone has made a huge mistake, just because "that's what the book said"?
Someone needs to have their balls felt for this, and not in a good way.