BNSF 6325 (ES44AC) brings an empty coal train into downtown Denver, Colorado, passing Empower Field where the Denver Broncos play.

A loaded oil train snakes through the Columbia River Gorge in the late evening.

A pair of westbound Z-trains begin the trek of chasing each other across the Marceline Sub at sunrise. Here the 1st westbound, a North Bay Z-train, rumbles past MP 241, west of Fort Madison right ... (more)

BNSF 6325 brings up the rear of an eastbound oil train on Montana Rail Link as the train passes the signals at the east end of Austin siding. The train has just descended Mullan Pass and will arri... (more)

BNSF ES44C4 6325 pulls into Winslow, AZ for a crew change after a long run across the Selgiman Sub from Needles, CA.

With an Alliance, TX bound stack train in tow, BNSF ES44C4 6325 pulls into Winslow for a crew change.

Descending the steep 2.2% grade of Mullan Pass is an eastbound BNSF oil train at Skyline, Montana, on June 28, 2017.

BNSF 6325 brings up the rear of a descending empty oil train at the east end of Austin siding. The train is rolling east off Mullan Pass and headed into Helena, MT for a crew change.

A unit oil train heads over the causeway at Chamberlain Lake.

A unit oil train rounds the curve as it approaches the causeway in Chamberlain Lake.

BNSF 6325 leads an eastbound stack train as it approaches Cut Bank, Mt. The train is winding down the S curves just west of the high bridge on the edge of town.

DPU on a KCS coal load for a TXU plant

The trees are begining their change as a brand new BNSF Gevo shoves a loaded coal train over the mountain.