+--+--+--+
                                             |
                                             +
                                             |
                                             +
                                             |
                                     +-x-+-x-+
                                             |
                     +             +-x-+--+--+--+--+-x-+
                    /              v        /
                   +               +       /
                  /                       /
                 +----+----+-----+----+  /
                 |           +        | +
                 |           |\       |/
                 +     +--+  + +      +
                 |    /|  |  |  \     |
                 |   v +--+--+   a+   |
                 +  /     |           +
                 | |      +  +        |
                 | |      |  x        |
   a             +-=+--+--+--+--+--+--+
   ^               |      x  
   |               v      +--+--+
   o               +         |  |
+--+--+--+--+      o         +--+--+
|  |  |  |  ^      |         |  |  |
+--+--+--+--+      +         +--+--+
|  |  |  |  |      |            |
+--+--+--+--+-x-+--+--+--+      |
|  |  |  |  |                   |
+--+--+--+--+                   1
|  |  |  |  |                 Prism
+--+--+--+--+                 River

1 = Prism River {all}

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