Please help me!

I was very young when I saw this movie clip/episode so I can only remember one scene/part of episode.

I saw this either late 90s early 2000s. There was a high cliff, and there was a thin pathway on the side, just big enough for train tracks. This cliff face was overlooking a green valley and I think the sun was just setting. A train was chugging along the tracks, and it made a turn into a canyon with cliffs on all sides of the train. The train was also going very slow. It was in color, and it could be in the 2000s or earlier. I don’t remember any dialogue. I do not know if the train had a face or not. It is not the polar express or the little engine that could. It’s possible that this was only one scene in a movie, or a small scene from a tv show. If you have any ideas, please let me know and i’ll check it out. This has been driving me crazy!!!

Hello!! Please help me figure out this movie!! IT IS DRIVING ME CRAZY.

This is an animated movie or part of a kids show with a train chugging along a cliff. The only other thing i can remember is that the train went into a canyon of some sort and was on a ledge. There may have been characters in the train, too. That may not have been the whole movie, because I do not remember much. I saw it late 90’s early 2000’s. It is not the polar express, or the little engine that could. I don’t know what else it could be. Please help! I would love to watch it again.