The California Zephyr climbs through Big Ten Curve at Rocky, Colorado as it begins the journey up the Moffat Tunnel Sub.

The California Zephyr runs through the valley at Tolland, Colorado on the way to the Moffat Tunnel.

The California Zephyr passes over the main road leading to the Moffat Tunnel as blue skies give the passengers a great view of the snowy Colorado Rocky Mountains.

The California Zephyr heads into Coal Creek Canyon during a heavy snowstorm, providing the passengers with a great view of the snowy Colorado Rocky Mountains.

Amtrak engine #7 (P42DC) guides the California Zephyr through Coal Creek Canyon and will soon enter the Moffat Tunnel district where it will pass through 30 tunnels.

Amtrak’s California Zephyr is negotiating Byers Canyon west of Hot Sulphur Springs, Colorado, on November 15, 2021.

The California Zephyr 5 train gets ready to leave Denver's Union Station, with passengers getting a good view of the Union Pacific's Big Boy engine 4014 on the adjacent track.

The California Zephyr runs towards a waiting Union Pacific coal train at Rocky, Colorado.

Amtrak engine 146 (P42DC) leads the California Zephyr through Coal Creek Canyon and past an area being developed for high-end single-family homes. They will no doubt have a great view twice a day... (more)

The California Zephyr runs through Hudson, Colorado just as the sunrise kisses the nose of engine 29.

The California Zephyr runs through the cut at Coal Creek Canyon and will run up to Tunnel 1 at Plainview, Colorado.

AMTK 130 is on point of the ski train as it heads east back to Denver from Winter Park

Dawn is just about to launch the sunrise as Amtrak's Pepsi Can heritage unit engine 160 pulls through the BNSF Denver Yard before backing into Denver Union Station.

Pepsi Can Amtrak In an attempt to shoot both East Portal and here I chose to use my UAV for this capture from roughly 6 feet off the top set of rocks above tunnel 1; a favorite spot of... (more)

The Amtrak heritage engine 160 (known as the Pepsi Can paint scheme) exits Tunnel 1 at Plainview, Colorado as it leads the California Zephyr 6 train towards Denver.