Shot at 300mm from across the valley, BNSF 5176 will take several minutes to travel around the Allard Horseshoe and cross the rails in the foreground of the photo.
BNSF Railway C44-9W, BNSF 4339, brings up the rear as a DPU on an Eastbound manifest lead by BNSF 4358. It has just past the location of where tunnel 4 once stood.