[A] [v]-[ ]-[ ] [ ] [ ] [ ]-[ ]
         v   |   |   |   |   |   |     
        [a]-[ ] [P] [ ]-[ ]-[ ] [%]-[^]  
         |       |           |   |                
        [ ] [ ]-[ ]-[ ]<[ ] [ ]-[ ]-[ ]               
         |               |   |       |         
        [ ]-[ ]-[ ] [ ] [ ] [ ]-[ ] [ ]  
                 |   |   |           |    
        [ ]-[ ] [ ] [E] [ ]-[ ]-[ ]-[ ]           
         |   |   |   |                     
        [ ] [ ]-[ ] [@]-[ ]-[ ]-[ ]-[ ]                
         |                           |        
        [ ]-[ ]-[ ]-[ ]-[ ]-[ ]-[ ]-[ ]                     


Legend

< - One way west                                
| - South to level 4 teleport
v - One way south
@ - Trap on all levels
E - 2 Ice Elementals {Onyx Key}
% - Requires Onyx to go east
v - Down to level 5
^ - Up to level 7
P - Teleport to p on level 4 when entering from the north. 
a - Teleport to A when entering from the south.
A - Teleport from a