=============================
                             
   L-*-*-*-*-L-*-*-*-* L     
     |             | | |     
   *-*-*-* * L-*-*-* *-* L   
   |   | | |       |     |   
   L-*-* *-*      *-L-*-L   
       |                     
   *-* *   L   Narrow        
   |   |   |   Plateau       
   *-*-L   *                 
           |                 
           *                 
           |                 
          D                 
           |                 
           *                 
           |                 
           *                 
           |                 
           L                 
                            
                             
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