Black Mountain: Alex Hunter 4

Alex Hunter, code named Arcadian, wakes up with no knowledge of who he is, in the care of a woman he doesn't recognise, in a country not his own. But there is a calling deep within him, to return home to Black Mountain. Formed a billion years ago, the Appalachian's Black Mountain hosts a terrible legend. Only one elder remains to guard its long-forgotten, deadly secret and there is a fear that there is evil lurking again. Some hikers have gone missing, and the rescue team sent to search for them