Describir: Permafrost and periglacial processes

  _____     _____      _____    _____     ______   _    _    ______   
 / ____||  |  ___||   / ___//  |  ___||  /_____// | || | || |      \\ 
/ //---`'  | ||__     \___ \\  | ||__    `____ `  | || | || |  --  // 
\ \\___    | ||__     /    //  | ||__    /___//   | \\_/ || |  --  \\ 
 \_____||  |_____||  /____//   |_____||  `__ `     \____//  |______// 
  `----`   `-----`  `-----`    `-----`   /_//       `---`   `------`  
                                         `-`                          
 _    _   
| || | || 
| || | || 
| \\_/ || 
 \____//  
  `---`