BNSF 6346 (ES44AC) leads the Provo train around the corner and heads to Tunnel 17 on the Moffat Tunnel Sub.

Amtrak #5 over takes a UP manifest in Rollinsville, CO on UP's Moffat Tunnel Subdivision.

BNSF 7125 (ES44C4) leads a freight train down the hill from Tunnel 1 at Plainview, Colorado and makes the horseshoe turn in Coal Creek Canyon.

The California Zephyr makes the climb to Tunnel #1, along a stretch of track that has 3.4% grade, the steepest grade on the Moffat Tunnel District.

The California Zephyr has just run through Big Ten Curve and is passing by the Eisele siding as it runs along the base of Blue Mountain.

A westbound California Zephyr emerges from a tunnel in Gore Canyon as it hugs the banks of the Colorado River.

The DPUs on a westbound BNSF train shove toward Moffat Tunnel.

The Rocky Mountaineer climbs through Coal Creek Canyon toward Tunnel 1.

The California Zephyr rounds the corner of Blue Mountain and heads into Coal Creek Canyon, Colorado.

The rolling hills of Coal Creek Canyon and Plainview, Colorado provide a scenic backdrop to heritage engine 184 as it runs the California Zephyr on the Moffat Tunnel Sub.

A westbound run of the Rocky Mountaineer makes its way through the valley made by the Colorado River at Yarmony, Colorado, on November 14, 2021. The train has just passed over the east switch of Y... (more)

Heavy snow has coated the Boulder Flatirons rock formation as the California Zephyr makes the trek into the Moffat Tunnel Sub.

Overlooking Coal Creek Canyon near Plainview, CO, Amtrak’s California Zephyr is seen beginning it’s route through the Rockies on UP’s Moffat Tunnel Subdivision.

The California Zephyr runs through Coal Creek Canyon's horseshoe curve and will soon head up the hill towards Tunnel #1.

UP 6276 (ES44AC) rounds the corner at Tolland, Colorado as it takes an oil train down the Moffat Tunnel Sub towards Denver, Colorado.