It was 68° in Denver/Arvada, Colorado, on February 9, 2015, so a friend and I decided to hike out to Big 10 Curve to take advantage of the sunny skies and warm weather. This slightly different ang... (more)

Union Pacific’s Denver to Salt Lake City manifest freight About to pass over Blue Mountain Drive grade crossing west of Eisele (Clay), Colorado is Union Pacific MNYRO on February 2, 2014. Four GE ... (more)

An eastbound Union Pacific coal train snakes through Big 10 Curve on the afternoon of June 9, 2013. In the foreground are two AC4400CWs being used as rear DPUs going through Eisele (formerly Clay)... (more)

Led by GE ES44AC No. 7659, a westbound Union Pacific coal train with six locomotives on the head end are climbing the 2-percent grade above Rocky, Colorado, on June 2, 2013. In a few minutes, the ... (more)

A westbound Union Pacific coal train with six locomotive on the head end are passing through East Eisele, Colorado, on June 2, 2012. The last few cars of the long train are below and are about to ... (more)

A long Union Pacific XCLX (Xcel Energy) coal empty wraps around the curves while climbing the Front Range of the Rockies at Eisele (formerly Clay), Colorado. The lead locomotives are rattling over... (more)

On the morning of June 4, 2014, a long westbound XCLX coal train wraps itself around Big 10 Curve, Colorado on Union Pacific’s Moffat Tunnel Subdivision. The lead locomotives are seen above, head... (more)

Led by GE P42DC No. 156 in Phase I paint, Amtrak No. 6, the eastbound California Zephyr, drops downgrade through Eisele (formerly Clay), Colorado, late on the afternoon of June 1, 2014.

An eastbound Union Pacific coal train travels by the east end of Eisele (formerly Clay) siding, Colorado, passing a partially hidden relic from the past. Former D&RGW tank car No. X2906, a former ... (more)

Climbing the two-percent grade through Eisele (formerly Clay), Colorado, is a westbound BNSF manifest freight on June 9, 2014. Leading the train is repainted GE C44-9W No. 4490, followed by AC4400... (more)

A westbound Union Pacific coal empty wraps itself around Big 10 Curve as it passes the east switch at Eisele, Colorado, on the long climb to the Moffat Tunnel on the nice clear afternoon of June 9... (more)

Union Pacific GE ES44AC No. 7977 leads the MRONY (Salt Lake City’s Roper Yard to Denver’s North Yard manifest) freight into Eisele (formerly Clay), Colorado, on June 9, 2013. With the great Plains... (more)

The mid-train DPU’s on an eastbound Union Pacific coal train drop through Eisele (formerly Clay), Colorado, on the afternoon of June 9, 2013. Below, waiting to meet this load at Rocky siding, is a... (more)

Bringing an empty Union Pacific coal train upgrade into Big 10 Curve is a set of six locomotives led by GE ES44AC No. 7659.

With the rear of the coal train far below, six locomotive on the head end are passing through East Eisele, Colorado, on June 2, 2013. This westbound Union Pacific empty is rolling upgrade at a pre... (more)