Swamp Gas occurs in Zangarmarsh. It can be harvested for , by engineers using a .
Some approximate locations where Swamp gas has been encountered:
- In front of (south of) the west end of the Twin Spire Ruins.
- Between the Funggor Cavern, the Bloodscale Enclave and the Darkcrest Enclave.
- Between the Ango'rosh Grounds and the Portal Clearing.