The Lost Peak[51.8, 46.9] is the highest peak on the Lost Isles. It consists of Oostan and its various sections, including Oostan Nord, Oostan Sor, and Oostan Ost.
After Volcanoth! the Lost Peak is turned into a fiery, lava-drenched wasteland, and all its subzones are unreachable.
The mobs for Oostan and its regions are listed on their respective pages.