Pay your way through the marshes
From Fallen London Wiki
This page contains details about Fallen London Actions.
A Taciturn Lighterman is prepared to teach you the route through the marshes to the Scarred Naturalist's home – for the right price.
Unlocked with 20 x Piece of Rostygold
He sketches a map on the back of a bill and hands it over. It's not quite the guided tour you were hoping for...