They took Absalom's body, threw it into a deep pit in the forest, and covered it with a huge pile of stones. All the Israelites fled to their own hometowns.
it is not to remain there overnight. It must be buried the same day, because a dead body hanging on a post brings God's curse on the land. Bury the body, so that you will not defile the land that the Lord your God is giving you.