Liv Marsh

The Liv Marsh is a marsh in Avaconia that is known for it's underground poison gas reserves, it has very little poison gas (1000-1500 tons), which makes Avaconian geographers very confused, wondering where the gas went.

Use of gas in war
The poison gas was only used in war once, during the Avaconia Civil War to bomb Otápak and Vósan with gas.