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Steamtown National Historic Site The drive rods of the Illinois Central 790, a small freight locomotive. NPS Photo, Ken Ganz
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Steamtown National Historic Site
"Last of the Giants" Tour
Front view of the Union Pacific Big Boy steam locomotive showing the black pilot (cowcatcher) and grey smokebox.

NPS Photo, Ken Ganz

Union Pacific 4012, a "Big Boy" locomotive, is one of 25 built in the early 1940s by American Locomotive Company (ALCO).  You can learn more about this true giant of the rails on the "Last of the Giants" tour.

Join a Park Ranger or a Volunteer on a short walk to learn more about one of the heaviest steam locomotives ever built, Union Pacific "Big Boy" #4012! This 600-ton locomotive was engineered and built in 1941, primarily for use in the mountains of Wyoming and Utah (Weather-permitting - this is an outdoor program.)

(TOUR NOTE: This is NOT a locomotive cab tour! For safety reasons, visitor accessible equipment is located in the Museum Core Complex.)

Departs from the Visitor Center. Included in the Park Entrance Fee.

Click for more about the world's largest reciprocating steam locomotive.

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An engineer peers out of the cab of a steam locomotive. The engineer drives the train, but the conductor is in charge.

Did You Know?
The engineer drives the locomotive using the throttle lever, brakes, and reversing gear. He (or she) is in charge of the locomotive. The conductor, however, is in charge of the train. Learn more about railroad jobs at Steamtown NHS in Scranton, Pennsylvania.
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Last Updated: January 31, 2011 at 10:36 MST