The foetid Tenungick Swamp comprises one half of the midsection of the Underworld, joining with the Damienne Forest in the east and west and the Unsguul Mountains in the north. The Shtlenii River cuts through its southern end. Within the Tenungick, bubbles of noxious poison gas push and plop to the sludge-coated surface, formed by the subterranean workings of the swamp. It is here that adventurers first find themselves upon entering the Underworld, as this is where the Temple of Unlife's root of Yggdrasil leads. At the southern end of the swamp, on the southern banks of the Shtlenii, the dread Prylator Pit plunges into the bowels of the realm.