A freshly painted engine #164 (P42DC) leads the California Zephyr and emerges from Tunnel 1 as it begins the climb through the tunnel district on the Moffat Tunnel Sub.
With the Flatiron rock formation of Boulder, Colorado visible in the distance, the private car Cyrus K Holliday gets pulled up the Moffat Tunnel Sub on the back of the California Zephyr 5 train.