Kevin,
The group at the Nevada County Narrow Gauge museum are currently building a "Steam Locomotive" from the ground up. Myself and some others have been discouraged with the direction the group has been taking. Personally I no longer volunteer my labor up there and I tend to stay away and basically walked away from the group for all intents and purposes. There are a lot of issues up there that do not need to be discussed here, eventually the group will sort itself out and those of us that have left will return.
What you are seeing in the photo is part of the progress on building the contraption. There are more images and info on the creature here
http://www.ncngrrmuseum.org/
-=Andrew=-