Westbound Canadian National train No. 403 threads the darkening depths of Black Canyon west of Ashcroft, British Columbia, late in the afternoon of September 24, 2015. GE ES44DC Nos. 2261 and 2312, assisted by rear DPU EMD SD70M-2 No. 8949, have the 149-car manifest freight well at hand as they exit Tunnel 54.8 and dive across the Thompson River on a truss bridge, ending up in the CP side of the river for a while.