Union Pacific's Big Boy beats across the diamond and Sand Creek in Commerce City as they approach Denver.

Union Pacific's monstrous Big Boy 4014 slides south onto the Greeley Subdivision en route to Denver for its only scheduled service weekend for 2022.

Union Pacific's Potash Local from Grand Junction to Moab and return slides underneath the Corona Arch on their way back to Grand Junction.

Under a starry night sky, two Union Pacific SD70ACe-T4 units sit quiet awaiting a new crew.

Cumbres & Toltec's morning departure out of Chama makes its assault on Cumbres Pass seen through this Photoshop composite to display the elevation changes the train makes.

In the Colorado landscape's dramatic fashion, Royal Gorge Scenic train snakes along the Arkansas River and between the walls of the Royal Gorge. 1,053 feet above the train is the Royal Gorge Bridg... (more)

BNSF 6396 awaits a slot in Gallup Yard while BNSF 7287 on a stack train races east at sunset.

Navajo Mine Railroad ET44 2026 brings up the rear of a southbound coal move with an Alco C425 leading out of the Four Corners Station.

As seen from the overlook above, Union Pacific's weekly local to Montrose snakes along the Gunnison River between Grand Junction and Delta.

Under the watchful eye of the train crew, Section 463 clings to the side of the mountain as it weaves its way along the famous High Line of the D&RGW Silverton Branch. A section to 463 was run to ... (more)

Looking high above the famous High Line we see K-36 Class 480 on train 261 to Cascade Canyon.

K-28 Class 473 runs light engine through the canyon back to Durango, seen here passing the waterfall and water spout at Tank Creek.

K-36 Class 480 and K-28 Class 473 exchange duties at Silverton Wye after running North from Durango with train 463. Engine 473 will take the train home, while 480 will run light engine back down t... (more)

Engineer Russell and Fireman Kylah make it rain over the Animas River as they ease Durango-bound train 464 across High Bridge.

The weeds illuminate and ripple under a golden hour sun as two classic Arkansas & Missouri Railroad Alcos work a 29-car grain train down to Fayetteville from Springdale.