Stormy skies break at sunset, silhouetting a westbound Union Pacific freight at Hermosa, Wyoming, on March 25, 2008.

A westbound Union Pacific potash train emerges from 1,828-foot Hermosa Tunnel on UP’s Sherman Hill crossing on the Laramie Subdivision in Wyoming on October 29, 2008.

An eastbound Union Pacific freight train has just exited one of the Hermosa tunnels on Wyoming's Sherman Hill on August 17, 1957. Road power is 4-8-8-4 "Big Boy" no. 4019, assisted by 4-8-4 no. 82... (more)

A hot westbound Union Pacific intermodal train exits Hermosa Tunnel, Wyoming, on September 24, 2003. On the point is GE Dash 8-40C No. 9123 followed by an EMD SD70M.

Something you don't see on Sherman Hill and environs: green foliage! After all the snowdrifts and permafrost have melted, there is a very short time when the Spring attempts to take hold, but al... (more)

A westbound Union Pacific freight is silhouetted against the western sky after sunset at Hermosa, Wyoming, on March 25, 2008.

A westbound Union Pacific autorack train hauls new automobiles and trucks to their future owners at Hermosa, Wyoming, including these new Hummers on TTGX car No. 159107, silhouetted by the setting... (more)

The world's largest diesel locomotive, a Union Pacific's DDA40X, leads an eastbound intermodal train at Hermosa, Wyoming, in July 1984. Trailing No. 6913 are three new Norfolk Southern GE C39-8s. ... (more)

A westbound unit train emerges from a cut leading to the Hermosa Tunnel on Union Pacific’s Sherman Hill in Wyoming on October 29, 2008.

Union Pacific's Western Pacific heritage locomotive No. 1983 leads an eastbound freight at Hermosa, Wyoming, on May 28, 2009.

An evening train splits the signals as it nears the Hermosa Tunnels.

Diehard photographers of the OLD UP will recognize this seldom seen side of Sherman Hill, the west slope so-to-speak. Late afternoons in the summer presented somewhat of a degree of difficulty get... (more)

Three SD40-2's take a train east over Sherman Hill during a storm.

A pair of UP C40-8's break up the silence after a storm has passed. This is the west side of the Hermosa tunnels.

Detouring through Wyoming is Amtrak #5, the California Zephyr. It is seen here about to enter the boar of the Hermosa Tunnels just east of Tie Siding on Track 2 from Dale Jct.