cross-posted from: https://lemm.ee/post/3141578
At the time of this photo, Union Pacific 3985, a Challenger class 4-6-6-4, was the largest operating steam locomotive in existence. This locomotive was donated by Union Pacific to a museum and has been replaced in excursion service by an even larger 4-8-8-4 Big Boy locomotive.
Photographed in September 2005 at the UP Albina Yard. Portland, Oregon.
That's too bad, seeing big boy is something really special. I think they really could promote rail more within the US with these tours and stuff.