Delve into the deep secrets of the Darklands, a subterranean realmfrequented by dark elves, shadow dragons, and worse! This comprehensive sourcebook provides an overview of the cavernous realmsbelow the surface of the Pathfinder Chronicles campaign setting. Detailedcultural summaries of Darklands creatures such as drow, derro, troglodytes, andworse compliment a selection of new monsters from the dark corners of the earth. A beautiful poster map reveals never-before-seen details of the vastchambers and treacherous passage networks deep below the surface of theworld.