BNSF 8021 (ES44C4) pulls a long string of auto racks up the grade to Castle Rock, Colorado.

BNSF ACe 9272 leaves behind Castle Rock, Colorado as it travels south on the Joint Line.

BNSF 7714 ES44DC shoves a freight up the grade past Coal Creek Canyon which leads to Tunnel 1.

BNSF 9272 SD70ACe muscles a loaded coal to Castle Rock, Colorado.

The California Zephyr leaves Tunnel 1 on the way to Plainview, Colorado. It will be one of 29 Tunnels before entering the 6 mile long Moffat Tunnel running under the Continental Divide.

The California Zephyr leaves Tunnel 1 as it passes through a valley on the way to Plainview, Colorado.

BNSF 7714 (ES44DC) muscles a freight through Rocky, Colorado and heads towards Big Ten Curve.

The California Zephyr rounds Big Ten Curve as it heads towards Rocky, Colorado.

RTD commuter train 4006 (Hyundai Eagle P3) takes the elevated track as it heads from Aurora to Denver International Airport.

Royal Gorge's CRRX 3104 (GP40) leads the passenger train through the narrow canyons west of Canyon City, Colorado.

More Executive MACs are showing up in the Denver area with most being assigned to coal trains that run through the Denver area. BNSF 9709 regularly leads the 'beer train' that runs between Denver... (more)

The California Zephyr #5 kicks up the snow as it passes through Pinecliffe, Colorado.

It is good to see the 'normal' California Zephyr configuration making the runs again. Here is the #5 train, complete with baggage car, exiting Tunnel 1 and running through a valley leading to the... (more)

BNSF 4863 (Dash9) shoves a freight through the S curves at Palmer Lake, Colorado.

After running through Palmer Lake, Colorado, BNSF 5228 (Dash 944CW) along with a Canadian National unit crosses the Rio Grande bridge leading to Monument, Colorado. After Monument it will pass th... (more)