Oyg's Map of
Iridescent River {all}

 4
 |
 +
 |
 +
 |
 +
 |
 +--+
    |
    +--+
       |
       +--+
          |
          +--+
             |
             +--+--+
                   |
                   +
                   |
                   +
                   |
                   +--+
                      |
                      +
                      |
                      +--+
                         |
                         +--+
                            |
                            +--+
                               |
                               +  3
                               |  |
                               +--+
                                  |
                                  +
                                  |
                                  +--+
                                     |
                                     +--+
                                        |
                                        +
                                        |
                                        +
                                        |
                                        +
                                        |
                                        +--+
                                           |
                                           +
                                           |
                                           +--+--+--+--2--2--+--+
                                                                |
                                                                +--+--+
                                                                      |
                                                                      1

1 = Southern Brandywine River {all}
2 = Gnome Village {5-15}
3 = Prism River {all}
4 = Under Stratz {1-70}