Heavy frost and snow greet the riders of the Winter Park Express as it rounds the corner in Coal Creek Canyon, Colorado.

The Winter Park Express Ski Train runs through Coal Creek Canyon and through trees that have been flocked by freezing fog and falling snow.

A deep freeze along the Front Range and in the Colorado Rockies gave the crew of UP 7045 (C44ACM) an amazing show of winter. From the east portal of the Moffat Tunnel to the lower elevations of C... (more)

Amtrak engine #176 leads the California Zephyr through a winter wonderland at Plainview, Colorado created by freezing fog and snow showers. The temperature did not get above zero the entire day. ... (more)

Freezing fog and snow in Coal Creek Canyon greet the passengers and crew of the Winter Park Express Ski Train as it heads into the Colorado Rocky Mountains.

UP 6675 (AC4400CW) leads an oil can train down from Tunnel #1 and through Coal Creek Canyon, Colorado.

The Rocky Mountaineer begins its climb into the mountains after tackling Big Ten Curve. For now the fall colors are still on display, but the leaves are long gone at the higher altitudes.

The California Zephyr heads into Coal Creek Canyon and will soon make the climb to Tunnel #1 at Plainview, Colorado.

The California Zephyr rounds the base of Blue Mountain and enters Coal Creek Canyon, Colorado. In the distance are the windmills being tested at Boulder's NCAR (National Center for Atmospheric Re... (more)

UP 5592 (AC4400CW-CTE) muscles an oil train through Coal Creek Canyon.

The California Zephyr heads into Coal Creek Canyon and is about ready to cross Blue Mountain Road, where it will stop briefly so that two Arvada policemen can deal with a problem passenger.

Amtrak engine 83 (P42DC) leads the California Zephyr through Coal Creek Canyon as it begins the climb up the Moffat Tunnel Sub.

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.

The California Zephyr exits the cut in Coal Creek Canyon, Colorado.