Amtrak’s eastbound California Zephyr descends out of the Rocky Mountains, making the approach on the Big Ten Curves and their next stop, Denver. They have just exited the final tunnel on their t... (more)

The California Zephyr climbs out of Coal Creek Canyon and heads towards Tunnel #1 at Plainview, Colorado.

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

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

UP 2010 (ES44AC) runs through Little Ten Curve and will soon leave the Rocky siding area on its way to Denver, Colorado.

UP 2010 (ES44AC) leads a loaded coal train through Plainview on the Moffat Tunnel Sub.

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

UP 6675 (AC4400CW) leads an oil can train through Rollinsville on the Moffat Tunnel Sub.

An eastbound BNSF manifest freight with mostly tank cars filling out its consist, rolls downgrade through Big 10 Curve between Eisele and Rocky, Colorado, on the afternoon of February 13, 2016.

The Rocky Mountains are covered in fresh snow and the sun is shining as UP 6675 (AC4400CW) leads an oil can train down the Moffat Tunnel Sub through Crescent, Colorado.

The California Zephyr crosses over the road leading into Coal Creek Canyon as it begins the run up the Moffat Tunnel Sub.

BNSF's Denver-Provo manifest banks into the tight 10 degree curve at Pinecliffe passing the former location of Tunnel 28 daylighted back in 1951. As a geology buff, I've wanted to shoot this locat... (more)

The "Provo" grinds up the tough grade between Crescent and Pinecliffe navigating this challenging and remote portion of the tunnel district high above South Boulder Creek. Here the train... (more)

Nestled at just over 8000', the town of Pinecliffe, named in the most literal sense, hosts an eastbound manifest following the rushing waters of South Boulder Creek on its descent towards Denver o... (more)

After running through Coal Creek Canyon, the California Zephyr climbs the steep grade up to Tunnel 1 at Plainview, Colorado.