To the northwest of the Narlmarches in the Stolen Lands lies a great swamp known as Hooktongue Slough. This swamp is an enormous slime pit, filled with tiny rivulets and brooks, as well as insects, rodents, and larger predators. Along the northern side of the Slough are large snakes and mysterious water-walking creatures that hunt near Lake Hooktongue. South of the Slough are several tribes of boggards inhabiting mound-islands, fiercely defending their little islands against invaders from the lake to the north. Trolls are also known to creep through the southern region of the swamp, but the strange magic of the boggards keeps them at bay.