UP 5734 (AC4400CW-CTE) runs through Tunnel #29 at Pinecliffe, Colorado as it leads a rail train east on the Moffat Tunnel Sub.

UP 5734 (AC4400CW-CTE) heads into Tunnel #29 at Pinecliffe, Colorado as it heads east on the Moffat Tunnel Sub.

UP 5753 (AC4400CW-CTE) leads a rail train out of a snowy Tunnel #29 at Pinecliffe, Colorado and runs east on the Moffat Tunnel Sub.

BNSF 9210 (SD70ACe) runs through Tunnel #29 at Pinecliffe, Colorado as it heads east on the Moffat Tunnel Sub.

BNSF 9210 (SD70ACe) runs through Tunnel #29 at Pinecliffe, Colorado as it leads an oil can train east on the Moffat Tunnel Sub.

The California Zephyr emerges from Tunnel #29 in Pinecliffe, Colorado as it heads west on the Moffat Tunnel Sub.

Sunrise in Boiling Gulch Moments after sunrise a rare line up with the eastbound BNSF daily made my morning. A beautiful spectacle with so much depth and color.

Tunnel 29 East Portal MPVODEN-01 makes its daily appearance at tunnel 29.

Rocky Mountaineer Spring Snow Tunnel 29 and 12 inches of new snow melting fast in the March sunshine.

The California Zephyr runs through Tunnel 29 at Pinecliffe, Colorado as it heads into the Colorado Rocky Mountains on the Moffat Tunnel Sub.

The California Zephyr runs through heavy snow as it heads west through Pinecliffe, Colorado on the Moffat Tunnel Sub.

AMTK 188 (P42DC) leads a California Zephyr through a snowy Pinecliffe, Colorado. Notice the conductor giving a tip of the cap.

BNSF 6279 (ES44AC) leads the Provo train through Pinecliffe, Colorado as it heads to Denver on the Moffat Tunnel Sub.

BNSF 6149 (ES44AC) leads a freight eastbound on the Moffat Tunnel Sub through Pinecliffe, Colorado.

BNSF 6149 (ES44AC) leads a freight through Pinecliffe, Colorado on the Moffat Tunnel Sub.