Multi-layer dungeon map; '<' and '>' are staircases

DeepMap.txt

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   ┌───┐┌────┐                  ┌─┐   ┌────┐                
  ┌┘.""└┘....└┐                ┌┘.└┐ ┌┘....└┐               
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                              └┐...│......,~~,..,~,.....│   
                               └───┴────────────────────┘   

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                                      ┌─┬─┐┌─┐              
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                     │....┌─┘  │""".......┌──┘              
                     └────┘    └──────────┘                 

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  ┌────────────┐                                            
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                               │...........................│
                               └───────────────────────────┘

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                            ┌────┐                          
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--------------------------------------------------- depth 4
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--------------------------------------------------- depth 5
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--------------------------------------------------- depth 6
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