San Baquero was an island in the Gulf of Mexico.
The small island was both a volcanic and political hotbed. Large drug trafficking operations into the United States were organized from the island nation, and the authorities had difficulties putting it down.
The Justice League came to aid of the islanders when the volcano was showing signs of an impending eruption. The recently escaped Doomsday also made his way there, to battle Superman. Wade Eiling though the best solution to deal with all their problems—Doomsday, drugs and Superman—by sending a thermo-nuclear missile to the island, but Batman managed to intercept it.