[v]---------[^]                             [^] Ledge
           /           /                               / 
        [ ]         [ ]                     [ ]     [ ]   
       /           /                       /           \
    [ ]         [ ]                     [ ]             [ ]
     |           |                     /   \             |
    [^]         [ ]                 [ ]     [ ]-[ ]     [ ]
       \         |                 /         |     \     |
        [v]     [ ]             [ ]         [ ]     [ ]-[ ]
         |       |             /           /             |
        [ ]     [ ]         [ ]         [ ]             [ ]
         |       |             \         |             /
        [v]     [ ]             [ ]     [ ]         [ ]
       /         |             /   \   /           /
    [^]         [ ]         [ ]     [ ]         [ ]         [ ] [v]-----[^]
     |                       |       |           |         /     |       |
    [ ]                     [ ]     [ ]         [ ]     [v]     [ ]     [ ]
     |                     /         |         /         |     /       /
    [ ]                 [ ]         [ ]-[ ]-[ ]          |  [ ]     [ ]
       \               /   \       /                     | /       /
        [ ]         [ ]     [ ]-[^]-[v]                 [^]     [ ]
           \         |                 \                       /
            [ ]  Labyrinth              [ ]-[ ]-[ ]-[^]-[ ]-[ ]
               \                                     |
                [ ]---------[ ]---------[ ]---------[v]


Legend

[v]   - down
[^]   - up
[^]   - Up to Ledge
 -    - Link between ledge levels
 |    - Link between ledge levels
 /    - Link between ledge levels
 \    - Link between ledge levels
 
[ ]   - Monster lair.  Mouse over square for details