Ybo6 773 F-Ök. Många bilder. (Fordon: motorvagnar / dressiner)
I think it is between Orsa and Gråtbäck.
https://www.facebook.com/OrnskoldsviksJarnvagsSallskap/photos/a.1934270250144602.107374...
5467987024830/1934288503476110/?type=3&theater
(No need to have a facebook account, you can view the pictures without loggin in!)
At least, when the pictures are posted in chronological order (which they seem to be).