What did Christ do in the Grave

What did Christ do while in the Grave?

We know what Jesus did on the cross and what He did after the grave. What did Christ do in the Grave before Resurrection? After the cross and before the resurrection something happened.

Jesus saith unto her, Mary. She turned herself, and saith unto him, Rabboni; which is to say, Master. Jesus saith unto her, Touch me not; for I am not yet ascended to my Father: but go to my brethren, and say unto them, I ascend unto my Father, and your Father; and to my God, and your God.

- John 20:16-17 (KJV)