| 
       Michael A. Stecker 
  | 
    
| 
       
       
                                  
                                  
                                  Doubtful Sound 
                                
                                  
                                  
                                  This is not a lake, but an extension of the 
                                  Tasman Sea.  The cliff walls shelter the fjord 
                                  from  
                              winds, resulting in a glassy surface.  |