Tres Marías, Las

Tres Marías, Las läs trās märē´äs [key], archipelago, in the Pacific Ocean, c.60 mi (100 km) W of Nayarit state, Mexico. Of the four islands, two—María Madre, which is the largest (c.56 sq mi/145 sq km) and is also a federal penal colony, and María Magdalena—produce maguey, salt, and lumber.

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