2 Samuel 18:17-18

17They took Absalom and threw him into a deep pit in the forest and piled over him a very large heap of stones. Then all Israel fled, everyone to his tent.

18(Now Absalom, in his lifetime, had taken and set up for himself a pillar, which is in the King’s Valley, for he said, “I have no son to preserve the memory of my name.” So he called the pillar by his name and it has been called Absalom’s Monument to this day.)