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| Publisher |
DC |
| Writer |
Bob Haney |
| Artist |
Sal Trapani |
| Published | December 1966 |
Simon Stagg discovers a lost valley filled with strange machines and cavemen; Stagg, Sapphire, Metamorpho and Java go there to investigate; El Matanzas uses the advanced machines that Stagg had discovered to restore himself as dictator of his country.
