An eastbound Union Pacific stack train threads through stark Palisade Canyon, Nevada, and crosses the Humbolt River on March 7, 2012. The vastness of this barren landscape through Palisade Canyon ... (more)

A UP stack train heads eastbound on Track 2 through Palisade Canyon, Nevada, on March 7, 2012. Both Southern Pacific and Western Pacific built their main lines through here alongside the Humbolt R... (more)