BNSF 7068 (ES44C4) leads a long freight through the winding turns of Big Ten Curve as it heads towards Denver, Colorado.

Amtrak tested out running the new Siemens SC-44 on the front of the California Zephyr in February, 2020. It left Denver in the middle of a blizzard as it made its way into the Colorado ROcky Moun... (more)

An orange tinted sunrise catches the Winter Park Ski Train as it heads through Little Ten Curve on its way into the Colorado Rocky Mountains. Skiers and rail fans are excited at the prospects of ... (more)

The California Zephyr runs past Rocky, Colorado as it heads towards Little Ten Curve.

UP 6326 (SD70ACe) leads 5 other engines, including the Western Pacific heritage engine, past the windmills of the ENCAR (National Center for Atmospheric Research) facility in Boulder, Colorado. ... (more)

Amtrak engine 190 (P42DC) leads the California Zephyr between the trees at Big Ten Curve as it heads towards Denver, Colorado.

Back in February of 2020 Amtrak added two new Siemens SC44 Charger units to the California Zephyr. The Chargers were supplemented by a P42DC and two baggage cars and left Denver during a strong s... (more)

This wide angle view shows BNSF 7068 (ES44C4) leading a long train through Little Ten Curve in the lower left and Big Ten curve on the right. Also visible is the Denver skyline in the upper right ... (more)

After running through Big Ten Curve BNSF 7068 (ES44C4) leads a long freight towards the Little Ten Curve and will soon pass through the Rocky Siding.

A Union Pacific manifest freight curves through Rocky, Colorado, on May 13, 2017, while working westbound on the Moffat Tunnel Subdivision. Downtown Denver, in the background, is 16 miles away “... (more)

Union Pacific EMD SD70ACe No. 1943 leads a westbound passenger train (office car special) on UP’s former Rio Grande Moffat Tunnel route west of Rocky, Colorado, on August 21, 2019.

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.

A westbound Union Pacific coal empty, powered by three GE AC4400CWs, climbs upgrade around “Little 10 Curve” at Rocky, Colorado, on UP’s former Rio Grande Moffat Tunnel Subdivision on the af... (more)

After running through Little Ten Curve the California Zephyr rounds the base of Big Ten Curve which will elevate the train to the track seen in the background.