Describir: Outdoor tornado shelters for residential areas

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