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Review title: Solid compendium of lore for major netherworld adventures
Product review: This book will add amazing depth to your campaigns, by providing you with exhaustive information on caverns and the depths of the Underdark. Included are rules on the Underdark, swimming, climbing, bridges, falling, spelunking, fatigue, skills, combat underground, BattleSystem wars underground, cave-ins, mining, new equipment, and much more!
