UP 3985 Challenger [OC]
UP 3985 Challenger [OC]
![](https://photos.smugmug.com/photos/i-kcR4vRQ/0/a664d774/O/i-kcR4vRQ.jpg?thumbnail=1024&format=webp)
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.
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