Great Eastern
                  Desert
                    1
                   /
                  +
                  |
                  +
                  |
    +------+------+------+------a
    |      |      |      |      |
    |      |      |   +  |      |
    |      |      |  /|  |      |
    |      |      | + |  |      |
    |      |      |/  |  |      |
    +------+------+---=--+------+
    |      |          |  |      |
    |      |   +------+--=---+  |
    |      |  /      /|  |  /   |
    |      | +      / |  | +    |
    |      |/      /  |  |/     |
    +------+      /   +  +------+
           |     /   /   |
           |    /   +    |
           |   /   /     |
           +--%---+------+
             /
            /           
           +
            \                a
             +              ^
              \            /
               + +     +--+
                \|     |  |
                 +--+--+--+
                  \
                   \   c<-b--c->b
                    \     |  |
                     \    +--+
                      \   |
                    +--+--+
                        \
                         \     +--+--+--+
                          \    |  |
                           \ +-+  +  +
                            \  |     |
                             \ +     +--+
                              \|     |
                      +<-+--+--+--+--+
                               |
                               +--+--+
                               |     |
                               +     +
                                     |
                                     +--+

1 = Oyg's Map of Great Eastern Desert {10-20}

Key to Mystic Adventure ASCII Maps