Two Phase VII engines lead the California Zephyr through a snowy Coal Creek Canyon as it heads west into the Colorado Rocky Mountains on the Moffat Tunnel Sub.

The California Zephyr climbs out of Coal Creek Canyon and heads west on the Moffat Tunnel Sub.

The California Zephyr is led by two Phase VII P42DC's as they head into the Colorado Rocky Mountains at Plainview, Colorado.

Amtrak engine #204 (P42DC) in a Phase VII paint scheme leads the California Zephyr over Highway 72 in Coal Creek Canyon, Colorado.

Heavy snow fell along the Colorado Front Range as we see the California Zephyr climb out of Coal Creek Canyon towards Tunnel #1.

A pair of colorful Phase VII Amtrak engines lead the California Zephyr through a snowy Coal Creek Canyon as the train heads into the Colorado Rocky Mountains.

BNSF 5993 (AC44AC) leads the Provo train over Highway 72 in Coal Creek Canyon as it heads west on the Moffat Tunnel Sub.

BNSF 5993 (ES44AC) heads towards Tunnel #1 as it climbs out of Coal Creek Canyon on the Moffat Tunnel Sub.

BNSF 5993 (ES44AC) runs through Coal Creek Canyon as it heads west on the Moffat Tunnel Sub.

UP 6356 (AC4400CW) climbs the 2% grade through Coal Creek Canyon as it heads west on the Moffat Tunnel Sub with an oil can train.

Still Climbing Rocky Mountaineer now known at the Canyon Spirit delights the flowers in the spring sunshine.

Still Climbing Rocky Mountaineer now known at the Canyon Spirit delights the spring sunshine at tunnel 1.

Sunset falls along the Colorado Front Range as the California Zephyr #6 train drops into Coal Creek Canyon with a new Charger engine.

Amtrak heritage motor #160 in the Pepsi Can 50th anniversary paint scheme leads the California Zephyr over Highway 72 in Coal Creek Canyon as it heads west on the Moffat Tunnel Sub.

Amtrak engine #160 in the 'Pepsi Can' heritage scheme leads the California Zephyr through Coal Creek Canyon as it heads into the Colorado Rocky Mountains.