The Wedge and spine of what?

I can't in all good intentions include this in my Black Mountain and beauty of Western North Carolina blog. 
It's an interesting sculpture, maybe a spinal sculpture, and certainly not an expected thing to see as you park next to the Wedge building in the River Arts District of Asheville.

Last Wed. a friend and I walked around a bit, since it was the first day that we could wear sleeved shirts without coats.  It was also less than a week since a big snow storm shut down our entire area for days. 

So we enjoyed looking around.  And I took very few pictures.