He pulled down the altars that the kings of Judah had set up on the roof near the upper chamber of Ahaz, and the altars that Manasseh had set up in the two courtyards of the house of the LORD. The king pulverized them there and threw their dust into the Kidron Valley.
Jewish Publication Society of America Version (JPS1917) - 2 Kings 23:12 >And the altars that were on the roof of the upper chamber of Ahaz, which the kings of Judah had made, and the altars which Manasseh had made in the two courts of the house of the LORD, did the king break down, and beat them down from thence, and cast the dust of them into the brook Kidron.