Union Pacific 3985 Covington KY 1992

Union Pacific 3985 is a legendary 4-6-6-4 "Challenger" class simple articulated steam locomotive that was originally built in July 1943 by the American Locomotive Company (ALCO). For decades, it held the proud title of the largest and most powerful operating steam locomotive in the world until its stablemate, Union Pacific Big Boy 4014, was restored to operational service