The Perian mountain range is home to the tallest mountain on Perish, which is also a dormant volcano, which is how the range gets it's name. Mount Perian is easily twice the size of Mount Everest, and still technically considered able to become active again. However the likelihood of that happening anytime soon is improbable. It is covered with snow all the time, and often the people of Perish travel just to try and climb it. No one has successfully made it to the top and returned, though.