2 Samuel 18:17-18

17And they took Absalom, and cast him into the great pit in the forest, and raised over him a very great heap of stones: and all Israel fled every one to his tent.

18Now Absalom in his life time had taken and reared up for himself the pillar, which is in the king’s dale: for he said, I have no son to keep my name in remembrance: and he called the pillar after his own name: and it is called Absalom’s monument, unto this day.