I remember I posted and example which predates the pyramids in that thread:
https://openphotographyforums.com/forums/threads/a-comparatively-young-house.22323/
But we don't really know the rites from the neolithic, even when the neolithic is as recent as it is in Australia. We found artefacts with human bones within. That much is certain. We also know that there were many more dead people which we did not find. We don't know what happened to these, although it would probably be necessary to find out to understand what relation the neolithic people had with death. I mean: if they buried 10 people and let all the other rot away in pile, that is not the organised graveyard we like to entertain in our idea of the neolithic.
Likewise, we have no idea about the religions of the time. Even with the people still living in the neolithic today, this proves difficult. It is not because they use stone tools, that they are stupid. When the ethnologists come with presents and ask questions, these folks are quick to observe that "white man comes and gives valuables for stories, let us tell them really good ones".