The California Zephyr runs along the base of Blue Mountain as it heads towards the Big Ten Curve through Eisele, Colorado.

BNSF 5934 (ES44AC) leads the Provo to Denver train through Eisele, Colorado on the Moffat Tunnel Sub.

The California Zephyr #5 train is heading up the grade at Eisele, Colorado on the Moffat Tunnel Sub.

Led by Union Pacific GE ES44AC No. 7977, UP’s MRONY (Salt Lake City’s Roper Yard to Denver’s North Yard manifest) freight drops downgrade through Eisele (formerly Clay), Colorado, on June 9,... (more)

The California Zephyr runs along the base of Blue Mountain, through Eisele, Colorado and towards Coal Creek Canyon on the Moffat Tunnel Sub.

The cars of the Winter Park Express reflect the golden sunrise at they head up the Moffat Tunnel Sub towards the Winter Park Ski Resort.

The California Zephyr climbs the 2% grade up the Moffat Tunnel Sub at Eisele, Colorado.

The large open areas at the base of Blue Mountain, including the stretch of Eisele, Big and Little Ten Curves, and Rocky, Colorado are protected by a conservation easement which will forever (hope... (more)

UP 6789 (AC4400CW) leads a freight at the base of Blue Mountain on a stretch called Eisele, Colorado.

A deepening of late day shadows envelops the Front Range mountains west of Denver, Colorado, on June 9, 2013, as Amtrak’s eastbound California Zephyr rolls through Eisele on a two percent descen... (more)

A Union Pacific coal load slowly rolls past Eisele siding (formerly Clay), Colorado, on the afternoon of June 9, 2013. Waiting for the eastbound train down below is a UP coal empty sitting at the ... (more)

The California Zephyr runs along the base of Blue Mountain as it heads up the Moffat Tunnel Sub.

The California Zephyr runs along the base of Blue Mountain as it climbs towards the tunnel district on the Moffat Tunnel Sub.

An amazing amount of elevation is gained as the railroad climbs the front range of the Rockies west of Denver on a two percent climb to the Moffat Tunnel. With the rear of a Union Pacific coal emp... (more)

A westbound Union Pacific coal empty works upgrade through Big 10 Curve into Eisele (Clay), Colorado, on June 2, 2013. Down below, the rear DPU unit is about to enter the famous curve.