A pair of Grinstein-painted EMD SD70MAC manned helpers pushes on a westbound Burlington Northern Santa Fe freight out of Rocky, Colorado, on Union Pacific’s former Rio Grande Moffat Tunnel route. ... (more)

On October 18, 1997, a westbound Burlington Northern Santa Fe freight climbs the front range of the Rockies at Clay, Colorado, on Union Pacific’s former Rio Grande Moffat Tunnel route. Powering th... (more)

The roar of GE locomotives echoes through the Rocky Mountains as UP 5931 leads a West Elk Mine coal empty up the grade towards Tunnel One in Coal Creek Canyon, CO on August 13th, 2019.

Powered by an A-B-A set of EMD E9s, a Union Pacific passenger train follows the Colorado River eastbound on UP’s Dotsero Cutoff between the sidings of Range and Dell west of Burns, Colorado, on Ju... (more)

Amtrak's eastbound California Zephyr snakes along the Colorado River through Yarmony in Eagle County, CO as the sun pokes through the afternoon's rolling clouds.

Rio Grande GP60 No. 3155 leads the Ansco Rio Grande Ski Train towards Tunnel 1 just east of Plainview, Colorado, on August 2, 1997. This summer edition of the train is operated to Winter Park for ... (more)

AMTK 130 Leads the California Zephyr through the 180 degree horseshoe curve in Coal Creek Canyon west of Denver.

Rio Grande Train 138 leaves the more open land at Azure and enters a narrow shelf as it dives into the narrow confines of Gore Canyon, Colorado.

UP 6825 and a former SP AC440CW head a coal train downgrade through the Big Ten loop above Arvada, CO while their rear DPUs exit the east end of Clay siding above them.

Amtrak’s westbound California Zephyr climbs out of rocky, Colorado, towards Big 10 Curve on August 21, 2019. At this late date, I was surprised to see a somewhat tired-looking GE P40DC No. 817 lea... (more)

The BNSF Provo-Denver manifest drops downgrade into Tolland, CO following the swelling South Boulder Creek. Colorado received record amounts of snowfall this year along the continental divide and ... (more)

An eastbound Union Pacific coal train drops downgrade through South Draw at Crescent, Colorado, on August 29, 2019. The head end locomotives led by GE ES44AC No. 5325 is between Tunnel Nos. 15 and... (more)

BNSF 5156 (Dash 9) leads a quartet of engines and a long freight down the steep grade on the Moffat Line between tunnels 2 and 3.

The morning California Zephyr heads up the Moffat line towards tunnel 3 as it begins its journey through the Colorado Rockies.

DRGW 5771 leads the westbound Rio Grande Zephyr at Pinecliff, CO, on Mar 26, 1983.