Near the city of Lemoriax, the Screaming Jungle meets an immense inland bog populated by troglodytes, lizardfolk, hezrou demons, and the few yuan-ti cultists who manage to survive the natural hazards of the layer. Farther into the interior, the ground hardens and the canopy grows dangerously lush, casting the land in deep shadows. Here enormous dinosaurs battle for territory with dire apes and bar-lguras, A lost plateau deep in the mainland is said to hold a two-way portal to the Guttering Grove, the realm of Ilsidahur, patron of the bar-lgura. The forest is named for the constantly keening fiendish monkeys, lemurs, and apes that dwell below its leafy canopy.