When I was pretty young (5 or 6) I remember watching a film my mum had on video, I asked her to turn it off because I was too scared and she lost it. Its bugged me ever since what it was.
It was a cartoon about a little girl. Her family was forced into building a railway and then they escaped and lived in a big hole in the forest.
With hindsight I wonder if it was maybe about the holocaust but a cartoon about that seems unlikely, but it was very dark and def about people being persecuted and forced into hard labour. It was a child's film (or even tv show?) because my mum put it on for me.
Can anyone help?