And I remember a Sunday School teacher, who told us of the ancient city dump referred to as Gehanna, was also kept on fire to burn the trash, and before the Jews came, the pagans threw their unwanted babies into that dump where they burned in the fire. Thus the ‘fires of hell, aka Gehanna.” As for the burning, I can only say that I remember the big trash dump at the Grafenwoehr Training Area in Germany, was always burning.
Yes, everything is destroyed in the smoldering and goes to ash. Unless it rains.