Desmond Bagley 
High Citadel [EPUB ebook] 

Action thriller by the classic adventure writer set in the South American Andes.When Tim O’Hara’s plane is hijacked and forced to crash land in the middle of the Andes, his troubles are only beginning. A heavily armed group of communist soldiers intent on killing one of his passengers — an influential political figure — have orders to leave no survivors. Isolated in the biting cold of the Andes, O’Hara’s party must fight for their lives with only the most primitive weapons…