The Marvelous Franklin Locomotive Butterfly Fire Door

Nikon D810, 25 sec, f/16, 35mm, ISO 400
Notice that this image required a long exposure of 25 seconds. The butterfly door is located inside a locomotive cab that was not very well lit and surrounded by black surfaces. The museum was not crowded, so I was able to set up a tripod and capture this long exposure.
It also seems that all of the locomotive images I captured are much better in black and white instead of their normal color. This is because they were mostly black anyways, and what little color there was did not add significantly to the composition. As an instructor once said, if color does not add to the image, get rid of the color!