Amtrak engine 138 (P42DC) leads the California Zephyr through the sweeping curve at Plainview, Colorado.

BNSF Ace 8403 leads a coal train through the S curve at Spruce, Colorado.

BNSF 7069 (ES44C4) leads a Warbonnet through Wiggins, Colorado on the Brush Sub.

Amtrak heritage #184 (P42DC) runs through Keenesburg, Colorado and times it well with the sunrise on the Brush Sub.

Amtrak heritage engine 184 (P42DC) rounds the corner leading up to Tunnel #1 at Plainview, Colorado.

BNSF 7529 (ES44DC) leads an officer's special from Denver to Pueblo, running south on the Joint Line through Castle Rock, Colorado.

BNSF 8403 (SD70ACe) runs through Palmer Lake as it heads south on the Joint Line.

BNSF 8403 (SD70ACe) turns the corner in Castle Rock as it runs a loaded coal train through the S curves on the Joint Line.

BNSF 7529 (ES44DC) leads an officer special over the Santa Fe Bridge in Larkspur, Colorado.

Sunrise on the Brush Sub greets the California Zephyr as it runs through Keenesburg, Colorado.

UP 6022 (AC4400CTE) muscles a stack train over the bridge at Cable, California.

Snow is falling fast as UP 6276 (ES44AC) leads an oil can train through Rocky, Colorado.

The Winter Park Express Ski Train runs through Eisele, Colorado as it takes a load of skiers and snowboarders to the Winter Park Ski Resort.

BNSF 9060 (SD70ACe) muscles a loaded coal train through the S curve as it leaves Palmer Lake on the Joint Line.

BNSF 8403 (SD70ACe) runs south on the Joint Line and makes the horseshoe curve at Palmer Lake.