The island holds a range of very high mountains, including Athos Peak. That peak is barren of the ice and snow that covers the rest of the mountains at the location of the Chynes Maw on its side, a cavern of roiling fires and molten earth. There, according to Evontra'vir, a spark of the power of the Emperor of Fire still remains.
The Calamity
Together with the rest of the Shattered Teeth, Igthuldus was presumably formed in the cataclysmic explosion that created the archipelago and destroyed the continent of Domunas when the sealed primordials Rau'shan, Emperor of Fire, and Ka'Mort, Empress of Earth were combined into a great quantity of magma and destroyed at the beginning of the Calamity.
Campaign Three: Bells Hells
The ancient Gau Drashari Evontra'vir, now become the Tree of Atrophy, told Ashton Greymoore and Bells Hells the location of the spark of Rau'shan located on Athos Peak in the Chynes Maw on the island of Igthuldus. When it sensed the group was being Scryed on, it opened a portal within its trunk and transported them to the mountains of the island.
