I cant say that Im sure , but here are are a few articles
that are on the internet that seem to say that neanderthals did
construct homes from bones.

https://duckduckgo.com/?q=neanderthal+house+mammoth+bones&t=hf&ia=web

3/4 inch of dust build up on the moon in 4.527 billion years,LOL and QM is fantasy science.