Describir: Timber its structure and properties

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