
Clara Finch recognizes the saltflight route because she once helped an unapproved rider escape through it.
Clara wants Elias to have a choice beyond obedience or exile, and the map is the first proof such a choice has existed before.
Source stage
More discoveries

Rowan Cross wants tomorrow's red signal jammed because it knows the betrayal she has not confessed to Mara.

Rowan Cross can identify the lock copied by Mara's third key because an expelled rider taught her forbidden lockwork.

Rowan Cross has seen the face in Mara's mirror pass on a sealed casualty board she was never meant to access.

Rowan Cross trusts stormglass over printed charts, especially when the official weather would fly Mara into killing wind.