A Rat in a Sewery Maze

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This page contains details about Fallen London Actions.
They say there are seven labyrinths in London. Does this count as one of them? It's not very grand. The air is ripe with primordial stenches, and you may need a new pair of boots. Where is that wretched beast?

Unlocked with a redirect from You know where the Rat is lairing...

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Shoot it the moment you see it
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Explore its lair thoroughly before it returns
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A strand of zeeweed (1 FATE)