A KCS AC4400CW leads the X-BARQUA1-27C, an empty BNSF grain train out of the tunnel at Nelson, AZ. This double track tunnel was the only one of its kind on the entire Santa Fe system.

A KCS AC4400CW leads the X-BARQUA1-27C, an empty BNSF grain train out of the tunnel at Nelson, AZ. This double track tunnel was the only one of its kind on the entire Santa Fe system.