Describir: In the nature of materials :

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