Thanks for the link Dave , I’d never seen anything like that !
With that much smoke, who needs steam!!?
Needs smell-o-vision.
LAO
I’d say a blown turbocharger on one of the locomotives up front…and the ventilation system for the tunnel was definitely not working…
Looks like an Alco!
Cough, cough…
I saw that posted over on G scale Mad. Kind of reminds me of the fog around the beltway on a thick summer afternoon rush hour.
-Brian
Posted it on GSM and meant to post it here, too, but forgot. Add it to the list . . . .
Seriously glad we don’t have Smell-O-Vision (or Taste-O-Vision) on our home PC!
Probably have to change the air filters on all those engines after one trip through there…
Wasn’t the cab forwards designed because of the crew being killed by the poisonous fumes in some of the tunnels? The human body can only take so much of those noxious fumes.
We’ll know how much noxious fumes the human body will take when you get back from the Invasion next year. 
Ric Golding said:The Italians certainly built some cab forwards because of just that problem. IIRC, they had a major disaster when passengers were asphyxiated when a train got stuck in a tunnel; cab forward wouldn't have helped in that case.
Wasn't the cab forwards designed because of the crew being killed by the poisonous fumes in some of the tunnels? The human body can only take so much of those noxious fumes.
Was that built by MTH?