User blog comment:Mckrongs/Monster Hunter 4 for the Nintendo 3DS/@comment-4212769-20130930152307/@comment-5963861-20130930234830

As for crimson fatalis being found in this particular area I'm not seeing anything particularly wrong with it. Teostra is primarily seen in volcanic areas yet they've been seen in swamps, deserts, and jungle areas. Nobody blinked an eye when it was confirmed to be seen in the unknown forest. Also Akantor as Pike stated above have been known to leave volcanoes and wreak havoc at other places.