This is not much to go on but what we remember is a man is teaching a boy life things and they were riding in the woods and the horse slipped on the leaves or pine needles and the kid ended up in a opening with a stranger and the man ends up killing him(I think)
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Imperialzim01 Selected answer as best
This sounds quite like the last episode of the Netflix series ‘Godless’ if you ever saw that?
Though
****SPOILER****
I don’t think the boy actually gets killed in the end, just very nearly
Imperialzim01 Posted new comment
Nope that was definitely it! Thank you ever so much!