BNSF Executive Grinstein #9709 leads the Coors Beer Train back into Denver from Golden, Colorado.

BNSF 1653 (SD40-2) runs light in the snow in Golden, Colorado.

Snow is falling on the Colorado Railroad Museum's Rio Grande Southern Galloping Goose #7 as it sits next to the Rio Grande GP30 that was recently restored.

The snow is falling at such a heavy rate that UP 8051 (ES44AC) has to use its pilot to plow the snow off the tracks.

UP 8051 (ES44AC) exits the east portal of the Moffat Tunnel into a heavy snowstorm that is blanketing the valley in nearly two feet of snow.

UP 801 (GP38-2) works the ladders in the North Yard in Denver, Colorado.

UP 1507 (GP40M) moves through the Union Pacific's North Yard in Denver, Colorado.

Its Throwback Thursday at the BNSF Engine Servicing Center in Denver, Colorado as two Executive Grinstein MACs and a Cascade Green Burlington Northern unit wait for servicing.

A BNSF stack train runs over the Santa Fe Bridge in Larkspur, Colorado.

BNSF 8115 (ES44C4) leads a stack train south on the Joint Line through Castle Rock, Colorado.

BNSF 9015 (SD70ACe) brings a freight into the Denver Yard and will back the cars into a ladder in the massive facility.

BNSF 8115 (ES44C4) crosses over the Santa Fe Bridge in Larkspur, Colorado.

BNSF 8115 (ES44C4) leads a stack train through Greenland, Colorado on the Joint Line heading south.

The California Zephyr runs over the bridge spanning Highway 72 in Coal Creek Canyon. Notice the Federal Railway Administration car in place of where the baggage car would normally be.

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