"Caverns of Mystery!" was the seventh installment of The Keeper's World, published in Pizzazz 7 in April 1978. The entire story arc was reprinted in the UK in Star Wars Weekly 47–50 in 1978–79, and in the 1999 limited-release comic Star Wars 0.
Imperial stormtroopers are closing in on Luke Skywalker, Leia Organa, C-3PO, and R2-D2 when they are saved by the elemental powers of Fire, Rain, Wind, and Earth. While the Imperials are distracted, the Rebels and the elemental children flee deeper into the Keeper's Temple, where they come face to face with The Keeper, a powerful mass of computerized technology. The Keeper chastises the children for allowing her presence to be discovered, and despite the protests of the children she strikes the Rebels with a powerful energy beam.
- Star Wars 0
- Star Wars Omnibus: Wild Space Volume 1
- Star Wars: The Original Marvel Years Omnibus Vol. 3
- Star Wars Legends Epic Collection: The Original Marvel Years Vol. 1