This ancient temple is constructed inside an active volcano near the Forest of Tranquility. It was the hiding place for the Sword of Fire and a Fangblade was buried inside the volcano itself. There was an access point to the Underworld behind a lava fall, but Kai destroyed it. The Fire Temple was home to the mighty Fire Dragon, who guarded the Sword of Fire. Later, when the Serpentine traveled to its inner core to retrieve the Fangblade, the volcano was very unstable. The ninja's elemental powers initiated the explosive eruption.