Beneath the surface, the denizens of the Darklands stalk a world of endless night. Pathfinder Campaign Setting: Darklands Revisited casts new light on these subterranean terrors, preparing heroes to face what dangers lurk below. This 64-page guide reveals 10 notorious Darklands races and monsters, from familiar foes like troglodytes and drow to elusive menaces like urdefhan and seugathi. Each chapter presents detailed ecologies, monstrous rules options and variants, and stat blocks for notorious foes. There's a reason to fear the dark places below. If you must go, be prepared with Darklands Revisited.