The Rio Grande Ski Train heads west out of Denver at sunrise on a bright January 6, 2001.

Tags:   UP Moffat Tunnel Sub Ski Train Rio Grande Ski Train Moffat Sub. Leyden Colorado sunrise Denver Denver skyline clouds F40PH passenger train train railroad CO

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Amid a stormy sky, coal trains continue the daily march to the mines of Powder River Basin south of Bill, Wyoming, during sunrise on May 30, 2009.

Tags:   Union Pacific BNSF silhouette sunrise stormy Bill Wyoming Powder River Basin train railroad WY coal mining sky unit train coal train UP

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Sunrise on the Union Pacific main line east of Hillsdale, Wyoming, presents a westbound freight headed for a crew change at Cheyenne on the morning of March 26, 2008.

Tags:   Union Pacific sunrise morning silhouette train railroad Hillsdale Wyoming Cheyenne WY UP

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As dawn arrives on March 6, 2012, a Union Pacific grain train crawls around Arnold Loop, Nevada.

Tags:   Union Pacific Clifside Arnold Loop Nevada dawn sunrise silhouette grain train train railroad NV UP

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Railroad pole lines are getting more rare, but Union Pacific's right-of-way up Peru Hill west of Green River, Wyoming still has the silent sentinels lining the way, as seen at dawn on March 13, 2012.

Tags:   Union Pacific pole line Green River Wyoming Peru Hill railroad WY dawn sunrise telephone poles UP

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