I would think carving bone would be just about the most ancient of technologies/arts.
Third or fourth oldest profession? ;0)
Neolithic/Iron/Bronze Age are kinda my favorite periods of history - another thing I'm looking forward to about being in the UK. I stand in awe of the work people accomplished just using bone, antler, and flint tools.
It's also an honoring thing. Cervids, Bovines, and other ungulates have kept us in food, clothing, shelter, tools, and totemic mythos for all of our known history. Without them, we'd be nada. We'd be nada without a lot of other animals too, but those are the bulk of the bone I get hold of ;0)