Oyg's Map of
Yggdrasil {15-50}

                                      Astral  
                                      Plane  
                                        3
                                       /
                                    + +
                                    |/
                                 +--+--+
                                   /|
                                + / +
                                |/
                             +--+--+
                               /|
                            + / +
                            |/
                         +--+--+
                           /|
                          / +
                         /
             Nirvana 2--+--2 Nirvana      
                       /
         Miden'nir 1--+
                     /
                  + /
                  |/
               +--+--+
                 /|
                + +
               /
              4
           Descent  
	   to Hell  

1 = Miden'nir {5-15}
2 = The Plane of Nirvana {20-45}
3 = Astral Plane {15-35}
4 = Descent to Hell {30-70}