This is a 3D skull of an elephant.
It was requested for 3D printing, but in the end wans't printed.
I presume it has been 3D scanned with MRI, or similair.
The file has holes inside which couldn't be scanned, or doesn't make sense modeling.
Try to print with: https://www.goedkope3dfilamenten.nl/basic-pla-sneeuwwit/
For a bone color.
