The prophecy of destruction presents a strict measure-for-measure consequence, where the exact location of the people's sin becomes the blueprint for their punishment. God intends to carry out His decree precisely as He declared [מצודת דוד]. The physical shattering that will soon strike the inhabitants is vividly illustrated by the breaking of a flask [מלבי״ם]. This judgment targets both the physical environment and the population. The people will be buried in the area of Topheth specifically to defile the land, mirroring how they originally defiled it with their own wrongdoings [מלבי״ם].
The central imagery of this prophecy revolves around Topheth, which the primary approach among commentators understands as a description of mass slaughter. Historically, the valley of Topheth was a notorious site where children were murdered as sacrifices to idols and the god Molech. In a dark parallel, the entire city will become filled with the corpses of the dead [רש״י, מצודת דוד]. Ultimately, the disaster will not be contained to the valley alone. The scale of the destruction will expand to such massive proportions that the entire city will turn into one giant graveyard, becoming completely identical in nature to Topheth itself [מלבי״ם].