It is the sepulchre
1 Kings 13:1
And, behold, there came a man of God out of Judah by the word of the LORD unto Bethel: and Jeroboam stood by the altar to burn incense.
1 Kings 13:30
And he laid his carcase in his own grave; and they mourned over him, saying, Alas, my brother!
1 Kings 13:31
And it came to pass, after he had buried him, that he spake to his sons, saying, When I am dead, then bury me in the sepulchre wherein the man of God is buried; lay my bones beside his bones: