These three "inner islands" consisting of Socorro, Isle Benidicto and Roca Partido were home to many long range cow expeditions until the year 2002 when Mexico implemented a fishing ban protecting these local waters and its biosphere reserve. The Revillagigedo Archipelago consists of four volcanic islands that are located 250 miles due south of Cabo San Lucas in Baja California Sur and 370 miles west-southwest of Cape Corrientes in Jalisco. They are administered by Mexico and in 1994 were classified as a Nature Protected Area under the denomination of Biosphere Reserve by UNESCO (United Nations Educational, Scientific and Cultural Organization). In 2002 the Mexican government outlawed commercial fishing in the area. The four islands are Socorro, San Benedicto, Roca Partida and Clarion. Socorro is the largest island. San Benedicto is 40 miles north of Socorro and Clarion is 250 miles west. Roca Partida, the smallest island, is 60 miles west of Socorro. Clarion island still allows fishing outside of its "6 mile buffer zone"