If you look at the description of the obsidian crusher, you will notice that it says about people looking at it as some kind of puzzle.

So I ask you, what is the puzzle about? Here is what I think

I think that there is a family consisting of: a boy, his sister, and his mom.

Once upon a time there was a family who own a campsite. They were a happy family who had a ton of people come and camp in their land. One day they sadly had to file for foreclosure. Their family was breaking apart and the boy was devastated. Not only that but their mother grew ill and died. The boys sister grew insane and fled to the abandoned mines that was a part of the campsite. And for the boy he disappeared and became what is now the apocrea. The only thing left we can remember of the boy is a missing poster of him. Nailed To a wooden pole, waiting for someone to play hide and seek.