// and \\ and || and = : tunnel with tracks
| and -  : tunnel
E        : entrance
a        : ant corspe        
#        : collapsed tunnel/ rubble
P        : Your current postion
         		     ||
                             ||
                   #         ||
                   +         ||
                   |         ||
                   | ----    ||              
                   |a|  |----P|
                   | ----    ||
               [ ]-|         ||
                   |         ||//
                   |         ||
               [ ]-|         ||
                   |         ||
                   -------   ||
                          \  ||
                           \ ||
                            \||
                             ||
                             ||
                             EE// and \\ and || and = : tunnel with tracks
| and -  : tunnel
E        : entrance
a        : ant corspe        
#        : collapsed tunnel/ rubble
P        : Your current postion
                         
                             ||
                            -||-
                             ||
                             ||
                             |P====//
                             ||
                             || 
                         #===||
         		     ||
         		     ||
         		     ||
                             ||
                   #         ||
                   +         ||
                   |         ||
                   | ----    ||              
                   |a|  |----||
                   | ----    ||
               [ ]-|         ||
                   |         ||//
                   |         ||
               [ ]-|         ||
                   |         ||
                   -------   ||
                          \  ||
                           \ ||
                            \||
                             ||
                             ||
                             EE