https://en.wikipedia.org/wiki/Gehenna
Child sacrifice at other Tophets contemporary with the Bible accounts (700–600 BCE) of the reigns of Ahaz and Manasseh have been established, such as the bones of children sacrificed at the Tophet to the goddess Tanit in Phoenician Carthage, and also child sacrifice in ancient Syria-Palestine. Scholars such as Mosca (1975) have concluded that the sacrifice recorded in the Hebrew Bible, such as Jeremiah's comment that the worshippers of Baal had "filled this place with the blood of innocents", is literal. Yet, the biblical words in the Book of Jeremiah describe events taking place in the seventh century in the place of Ben-hinnom: "Because they [the Israelites] have forsaken Me and have made this an alien place and have burned sacrifices in it to other gods, that neither they nor their forefathers nor the kings of Judah had ever known, and because they have filled this place with the blood of the innocent and have built the high places of Baal to burn their sons in the fire as burnt offerings to Baal, a thing which I never commanded or spoke of, nor did it ever enter My mind; therefore, behold, days are coming," declares the LORD, "when this place will no longer be called Topheth or the valley of Ben-hinnom, but rather the valley of Slaughter". J. Day, Heider, and Mosca believe that the Molech cult took place in the valley of Hinnom at the Topheth.
No archaeological evidence such as mass children's graves has been found; however, it has been suggested that such a find may be compromised by the heavy population history of the Jerusalem area compared to the Tophet found in Tunisia. The site would also have been disrupted by the actions of Josiah "And he defiled Topheth, which is in the valley of the children of Hinnom, that no man might make his son or his daughter to pass through the fire to Molech." (2 Kings 23). A minority of scholars have attempted to argue that the Bible does not portray actual child sacrifice, but only dedication to the god by fire; however, they are judged to have been "convincingly disproved" (Hay, 2011).