A morning smoker sends a cloud over the UP North Yard in Denver.

Fall colors are barely visible through the thick fog that's surrounding the mountainscape of Donner Pass, while a Westbound enters the rock cut leading to Tunnel 36.

With four inches of Sierra Cement already on the ground, more snow continues to fall while a Westbound stack train prepares to emerge from the ten thousand foot Tunnel 41.

With downtown for the backdrop and I-240 close by UP 7873 pulls out of UP Sargent Yard into KC Junction.