The El Vizcaíno Biosphere Reserve, created in 1988, is located in Mulegé Municipality in northern Baja California Sur, at the center of the Baja California Peninsula between the Pacific Ocean and the Gulf of California. With a landmass of over 9,625 square-miles, it is the largest wildlife refuge in Mexico and borders on the northern edge of the Valle de los Cirios Protected Area of Flora and Fauna.