The Forbidden Fountain of Oz food, which occurs most famously in the "forbidden fruit" of the Tree of Knowledge of Good and Evil in the Book of Genesis, but in other contexts too. The idea of water that purges the drinker's memory is also ancient. In Greek mythology it occurs as the river Lethe: the souls of the dead lose their memories of their earthly lives by drinking its water. The same idea can also be found in Eastern and other literatures, as in the "Well of the Waters of Forgetfulness" and other guises. "The 'Drink of Forgetfulness' is found in Greek, Hindu, Norse, and
The Complete Book of Dwarves how to survey the land, what products can be mined, and how much gold can be earned by mining. This chapter includes new equipment, such as smelters, battleaxes, and war machines. The book's tenth chapter discusses dwarven strongholds, including the various types of strongholds, their government, resources they have access to, and relationships with other races. The final chapter is for Dungeon Masters creating a dwarf-based campaign, containing guidelines such as what dwarf subraces to use, dwarven mythology, campaign environments, and rules on how to create new character kits. "The Complete Book of Dwarves" also contains "design sheets," for use