Describir: Timber its structure and properties

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