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Union Pacific Big Boy No. 4014โthe world's largest operating steam locomotiveโthundering by in full glory. This beast is a 4-8-8-4 articulated giant, over 130 feet long, weighing 1.2 million pounds, built in 1941 to conquer mountain grades hauling massive wartime freight. The only one of eight surviving Big Boys still running, restored and ripping it up with that classic steam roar and smoke plume. How cool is this?! Absolute engineering legend in motion. ๐๐จ
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