Is There a Surface Inside of a Black Hole?

If there is a quantum plus ball in the middle, then inside of a black hole, there would be a surface. Like a physical surface that you could maybe stand on if you could somehow survive or even think inside of it. I don't know if it would absorb you or pull you apart or melt you instantly. Sounds like maybe you want to test it first, you know, by throwing like say an animal at it.