Bathed in steam on a cold, damp morning of May 8, 2019, Union Pacific Big Boy No. 4014 descends the Wasatch grade at Castle Rock, Utah. Next stop—Echo.

At a servicing stop in Echo, a crowd of onlookers marvel at the sight of the world's largest locomotive under steam.

Photo finish. So this is how it ended....UP crew, left to right (844 to 4014): Ted Schulte, Kirt Clark, Bruce Kirk, Garland Baker, Troy Plagge, Jimmy Thompson, Don Crerar, Austin Barker, Ed Dicke... (more)

Thunder in the canyon. After completing her epic journey to Ogden for the Spike 150 celebration, UP Locomotives 4014 and 844 take their special train back east, through Echo Canyon on the r... (more)

Unsung heroes of the Union Pacific Steam Program. There is a small team of dedicated professionals that get the equipment ready and maintained on the road. These two gentlemen are using an air pow... (more)

The eastbound lanes of I-84 contrasted with the westbound lanes show just how popular the Big Boy was in his return to steam. Here, between Henefer and Echo, the Big Boy coasts at a leisurely pac... (more)

UP 4014, known as one of the Big Boys, storms out of Hermosa Tunnel on its way to Cheyenne, Wyoming.

On their eastbound journey, the 4014 & 844 approach the Hwy 374 overpass & the hordes of foamers waiting to get their photos.

Big Boy charges up Peru Hill eastbound.

Though the big boy is massive in its own right, it fails in comparison to Mount Ogden's snowy peaks in the background. 45 minutes into the journey to Evanston, 4014 passed through Peterson with mu... (more)

The hills were alive with people as 4014 passed through Echo Canyon on its short trip to Evanston on Mother's Day. It was truly a moving experience to see and hear 4014 pass through Castle Rock.

Surrounded by steam, pulling out of Evanston on a cold wet morning bound for Ogden.