Raging fire at the end of times
From Rigpa Wiki
The raging fire at the end of times (Tib. དུས་མཐའི་མེ་, dü té mé, Wyl. dus mtha'i me) is the fire that consumes a world system during a destruction kalpa. It is much hotter than a normal fire. For example, it can incinerate the hot hells [1]. It is the hottest kind of fire.