the reason the phrase "wait for it" was created. That steam is HOT, and the coal smoke isn't too pleasant either. A rare phenomenon to see now that steam locomotives aren't as commonly run anymore
Heritage train in Ovada, Italy
The trail of smoke is due to an old heritage train towed by Italian steam locomotive FS Class 740 coming out of the tunnel. The historic Italian FS Class 740 is ‘Consolidation’ steam locomotives manufactured from 1911.