The Winter Park Express runs through Arvada, Colorado as a heads west on the Moffat Tunnel Sub while Mother Nature dials up a beautiful golden sunrise in the east.

The California Zephyr gets a helping hand from UP 4341 (SD70M) as it runs by the Cold War Horse sculpture and heads into the Moffat Tunnel district and the Colorado Rocky Mountains.

The first runs of the season for the Winter Park Express Ski Train leaves Denver, Colorado under a golden sunrise.

Sunrise over Denver Provo bound from the sunrise of a new day over Denver.

Amtrak's westbound California Zephyr (train no. 5) has just exited the first of 29 different tunnels on the Eastern side of the Divide and approaches Plainview, CO on their way west

The subfreezing temps caused issues with one of the P42's so the Union Pacific added an engine up front to take the Zephyr through the Colorado Rockies.

The Rocky Mountaineer returns on the Moffat Sub from the last trip of the season and heads towards Arvada, Colorado.

The California Zephyr runs through Arvada, Colorado during a heavy snowstorm.

BNSF 9729 (SD70MAC) runs through Arvada, Colorado as it heads back to Denver.

The Rocky Mountaineer's 8021 (GP40-3) has a great looking paint job to match the passenger cars in their fleet.

A Very Patriotic Leyden Sunset Natures own fireworks so close to the 4th of July. Westbound Grand Junction bound manifest gets underway out of Leyden into the last light of a summer day.

BNSF 6202 (ES44AC) leads an interesting mix of power towards Arvada Colorado on the Moffat Tunnel Sub.

BNSF 6202 (ES44AC) leads the Provo train from Utah through Arvada, Colorado on its way to Denver.

BNSF 6202 (ES44AC) leads the Provo train towards Denver, passing through Arvada, Colorado and the many wild sunflowers growing next to the Moffat Tunnel Sub tracks. ... (more)

The Rocky Mountaineer leaves Denver and the Big Ten Curve behind, charging up the grade into Tunnel 1 and the incredible engineering of the Tunnel District on its run to the Moffat Tunnel and beyo... (more)