Deep in the Tunnel District between Plainview and Crescent, Colorado, Amtrakās eastbound California Zephyr threads through Tunnel 15 on May 14, 2017.
Amtrakās California Zephyr meets a westbound BNSF freight at Rocky, Colorado, on the afternoon of June 28, 2014. In a half hour or so, eastbound No. 6 be in Denver, seen on the horizon jutting u... (more)