The California Zephyr passes maintenance equipment working on the Big Ten Curve in Rocky, Colorado.

BNSF 5146 (Dash9) rounds the Big Ten Curve at Rocky, Colorado as it heads down the 2% grade towards Denver.

The Rocky Mountaineer's blue SD40M-2 leads the train on a test run through Little Ten Curve at Rocky, Colorado.

The BNSF Provo train rounds Big Ten Curve as it transitions down the 2% grade of the Moffat Tunnel Sub at Rocky, Colorado.

I spy, with my tree eye, Amtrak's OLI, passing by.

The California Zephyr runs through the open prairie lands of Rocky, Colorado as it heads into the Colorado Mountains on the Moffat Tunnel Sub.

Rocky Mountaineer's 8600 (SD40M-2) runs towards Big Ten Curve at Rocky, Colorado.

Here is a good profile look of Rocky Mountaineer's GP40-3 that runs on point through the Big Ten Curve in Rocky, Colorado.

The California Zephyr runs towards Big Ten Curve as it climbs the 2% grade towards the Colorado Rocky Mountains.

The California Zephyr with the lead motor in Phase VII paint runs through Little Ten Curve as it begins the climb into the Colorado Rocky Mountains.

UP 8697 (SD70ACe) leads a loaded coal train down the 2% grade at Big Ten Curve and runs through Little Ten Curve on the far side of the valley at Rocky, Colorado.

Amtrak engine #187 (P42DC) in Phase VII paint leads the California Zephyr #5 train up the 2% grade to Big Ten Curve in Rocky, Colorado.

Rocky Mountaineer engine #8021 (GP40-3) drops down the 2% grade at Big Ten Curve in Rocky, Colorado.

This weekend Denver hosted the convention of the American Shortline & Regional Railroad Association Convention (ASLRRA). The Rocky Mountaineer organized a trip from Denver's Union Station to the ... (more)

BNSF 8597 (SD70ACe) leads an oil can train through Rocky, Colorado as it heads east to Denver on the Moffat Tunnel Sub.