UP 7851 (AC45CCTE) moves through the Union Pacific's North Yard in Denver, Colorado to a waiting train.

As the sun rises, a UP northbound UP manifest starts around the Tehachapi Looop.

UP 7851 (AC45CCTE) runs through the North Yard in Denver, Colorado.

The rear DPU of a Union Pacific manifest rounds the Tehachapi Loop and crosses over itself as it heads north toward Bakersfield.

UP 7773 (AC45CCTE) runs over Sand Creek at is heads towards the North Yard in Denver, Colorado.

UP 7762 (AC45CCTE) joins other heavy units at the servicing island in the North Yard in Denver, Colorado.

A southbound UP manifest rounds the Tehachapi Loop. Second and third in the consist are UP 6345 and UP 6313, both former Southern Pacific AC44CWs.

A northbound UP manifest makes its way around the Tehachapi Loop.

After a locomotive mechanical issue was resolved, UP 7365 charges a long stack train around the loops at Caliente up grade on towards Tehachapi.

A Westbound Union Pacific Intermodal rolls through Vance Alabama in front of KyKenKee, inc Industrial Wood Products

As a BNSF Geomtry train descends downgrade in the background, UP 7365 is stopped with engine issues at Caliente.

UP 5546 (AC45CCTE) leads a freight past an oil can train as snow falls at the North Yard in Denver, Colorado.

UP 7788 (C45ACCTE) leads the GJ train through Leyden, Colorado on the Moffat Tunnel Sub.

The Craig branch from Bond to Craig once was filled with coal unit trains. Today it sees regularly only the once a week Craig local. Albeit it should depart around 9am at Phippsburg, we've encount... (more)

UP 7788 (C45ACCTE) leads a freight past the signal at Leyden, Colorado as it heads to Denver on the Moffat Tunnel Sub.