Consider the beads alone.

Manufacturing a bead from bone or ivory requires drilling — creating a hole through a dense material without metal tools.

In the Upper Paleolithic, this was done with stone borers: narrow, pointed stone tools rotated against the surface of the material until a hole was produced.

Each bead might require minutes or hours of sustained effort.

More than 120 beads in a single burial represents an investment of time and labor that is staggering to contemplate.

Someone made those beads.