"In places where no one lives, no one ever dies."
The Marshlands are a dank and miserable place: always hot and humid but never any sun. It's only value seems to be 'The Pools' on the border of Mirror City. Well, that and the various poisons that can be harvested from the plants and toads indigenous to the region. There are even some forms of life here that cannot be found in Healer's Woods.
The people who live there are few and far between and live close to nature. No one quite knows how they have remained on the council. The records only state that they were once removed, which was followed by a quick rebellion at the end of which the Marshlands maintained their place on the council. Not that their representative usually shows up. On the rare occasion one does, it is invariably a woman.
They are a very secretive people and nothing is heard from them until times of great trouble. Although the people of the Marshlands usually play a big part in solving the problem - whether it be sickness, natural disaster, war or some other catastrophe - the general populous of The Lands remains unaware of this. What people do know about the Marshlands come from Capitol produced propaganda and is designed to inspire fear. The Capitol, and the council, are afraid of the Marsh people. But not without reason.
The Marshlands are hiding something. No one knows what (or who) but any strangers who wander uninvited into the Marshlands vanish without a trace.