A westbound coal train crosses the causeway near Trout Creek, MT along the Clark Fork. It would seem the causeway separates winter from fall in this scene.

An eastbound BNSF freight passes over the Clark Fork on Bridge 57 west of Trout Creek, Montana, on the afternoon of May 20, 2013.

Four Boeing 737 fuselages get their first ride via rail on a J train headed west towards Renton, WA on Montana Rail Link at the Frog Pond, Trout Creek, MT.

The stillness of the Frog Pond near Trout Creek allows for a nice reflection as BNSF 6310 leads an eastbound coal empty across the causeway on Montana Rail Link.

BNSF 5940 leads an eastbound Montana Rail Link empty coal train across the causeway at the Frog Pond west of Trout Creek, MT on a blustery fall day. The train is making its run from Hauser, ID to ... (more)

Lightly falling snow has let up and a string of clouds settle into the contours of mountains lining the Clark Fork valley as a westbound BNSF coal train disturbs the winter quiet at Trout Creek, M... (more)

On a crisp February 23, 2017, an eastbound BNSF manifest freight crosses the inlet for Trout Creek where it enters the Clark Fork at Trout Creek, Montana.

Heavy clouds greet the day as a westbound coal train crosses the causeway at the Frog Pond near Trout Creek, MT on Montana Rail Link.

On Montana Rail Link’s scenic Fourth Subdivision, a westbound BNSF work train passes through a snowy Trout Creek, Montana, on February 23, 2017.

Autumn surrounds the banks of Frog Pond as winter peeks through low clouds on the adjoining mountainsides on at Trout Creek, Montana, on October 13, 2017, as a westbound BNSF coal train rumbles ac... (more)

Under a tumultuous sky, a westbound BNSF oil train casts its reflection in the frog pond west of Trout Creek, Montana, on the afternoon of October 13, 2017.

At sunset on September 30, 2014, an eastbound BNSF grain train thunders along the shore of the Clark Fork at of Trout Creek, Montana.

These four future Boeing 737 jetliners are almost taking a trip through the clouds before they are finished getting assembled! A westbound BNSF “Boeing Special” passes over the causeway west o... (more)

A westbound BNSF coal train powered by three EMD SD70ACes crosses the frozen inlet of Trout Creek at Bridge 55 west of Trout Creek, Montana, on an icy February 26, 2017.

An eastbound BNSF coal empty crosses Bridge 57 across the Clark Fork west of Trout Creek, Montana, on September 30, 2014.