From the publisher: A Pathfinder Roleplaying Game GM’S RESOURCE supplement by Creighton Broadhurst and David Posener In the deep, hidden places of the world where darkness rules, lurk dangers beyond the wildest nightmares of most who dwell in the sunlit uplands of the surface. Only the bravest and most skilled adventurers dare to invade the realms of the depraved duergar, the insane derro or the spider worshipping drow. Beyond these terrible threats lurk the predators of the wild lands chief amongst them the feared purple worm and the implacable roper. Running a campaign, or extended adventure, in the deep places of the world requires extensive preparation and planning. Caves & Caverns alleviates a GM's preparation time allowing him to focus on providing exciting and compelling adventures by providing the tools to craft memorable adventures. Caves & Caverns presents: Over 20 ready-made encounters suitable as random encounters or as a springboard to the next adventure Dozens of full stat blocks Information on the features and hazards of deep cave networks And more!