Are those big boulders the surrounding material for the fossil remains? A tooth, a bit of jawbone, a fragment of a skull or of an ulna? Leave it in the rock, exposed and they can’t call it fake.
They’re too darned big to have been used as tools, except as an anvil to beat up other stuff on. Or maybe tools were flaked off of them.
Interesting, in any case.
No, as I interpret the photo, the big rocks may be displayed as “cores” from which flakes — to be used as tools — were detached, using hard-hammer percussion.