2 Samuel 18:17-18

17And they took Absalom and cast him into a large pit in the woods, and laid a very large heap of stones over him. Then all Israel fled, everyone to his tent.

18Now Absalom in his lifetime had taken and set up a pillar for himself, which is in the King’s Valley. For he said, “I have no son to keep my name in remembrance.” He called the pillar after his own name. And to this day it is called Absalom’s Monument.