Stacks off the CSX in Chicago (North Baltimore, Ohio) bound for Los Angeles head west through downtown Flagstaff, as seen from the top of Mars Hill on March 9, 2015.

CREX 1309 leads train H-BARKCK east of Flagstaff.

A Willow Springs, Ill., to Los Angeles Z-Train rolls through downtown Flagstaff, passing the Amtrak station on March 9, 2015.

A long westbound baretable works upgrade towards Flagstaff.

A hot westbound with brand new power blasts by the Flagstaff Local.

CREX lease power leads this Barstow to Kansas City freight just east of Flagstaff. Recent snow fall made for some interesting photos around the area.

A westbound stack train battles up the Arizona Divide as it struggles to get back to track speed after being overtaken by a westbound Z-Train.

A hot Z9 intermodal train charges up the Arizona Divide as it runs on the opposite main to overtake a westbound train in front of it.

A westbound that struck a van at a crossing a ways back, forced other westbounds to track 2. Here an older GE leads a stack train as the heavy snow eases a bit in downtown Flagstaff.

Snow coming down so hard it's almost a white out, even the NWS did not expect this. Meanwhile, the BNSF carries on with another eastbound of about 14 trains in two hours.

Last train before we had to head down the mountain. Another westbound struck a van at the Ponderosa crossing which forced a reroute of westbounds to use the # 2 main.

Heavy snow pounds Flagstaff as a BNSF Z emerges from the white out. We saw 14 trains in about two hours. Wife's business trip to Vegas again, side trip to Flagstaff...

Snowy conditions on the mountain as a Q train roars upgrade through Flagstaff. This city is the 7th snowiest in the USA.

A hot Z hustles through the cold and intensifying snow which has stuck to everything making for a fantastic winter wonderland.

SNOW! The snow we had hoped for turned up a day late, but wow did it come. Our first of 14 trains seen in 2 hours was this manifest rolling downhill and through downtown.