The Temple of Elemental Evil is a fictional dungeon and adventure setting in the Dungeons & Dragons role-playing game. It was originally created by Gary Gygax and Dave Arneson in the 1970s and has since become a classic campaign. The temple serves as a stronghold for elemental cults, where players face various challenges and monsters while trying to thwart evil plans. The setting is known for its rich lore and complex interactions between the four elemental forces: earth, air, fire, and water. Players often explore the temple's depths, uncovering secrets and battling powerful foes, making it a popular choice for both new and experienced adventurers.